JP2001014019A - Production planning support system, production planning evaluating method, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly make a plan or make correctable a plan by providing a retrieval output means or the like which obtains and outputs at least one of the judgement that a higher order can be executed by retrieval from the higher order to lower order and the judgement of the influence of order delay on a product by the retrieval from the lower order to the higher order. SOLUTION: At the time of judging whether or not a production plan order (A001) can be executed, a record corded to a demand given the same number as the order (A001) is retrieved. Then, a retrieval output means repeatedly retrieves the relation between the demand corresponding to a specific order of cording information generated by a cording means and an order related thereto to obtain and output one of the judgement of the execution possibility of the higher order by retrieval from the higher order to the lower order and the judgement of the influence of order delay on a product by retrieval from the lower order to the higher order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production management system applied to a factory or the like that assembles and manufactures a product using a plurality of members. The present invention relates to a production plan support system for evaluating and determining feasibility, a production plan evaluation method, and a recording medium.

[0002]

2. Description of the Related Art In recent industrial products, one product is composed of a combination of parts having various functions, and tends to be more complex and higher in performance. Along with this, there is a tendency that both types and quantities of parts assembled into one product increase. In a factory that handles such a huge number of parts, computer production management is indispensable.

In particular, the use of a computer is indispensable for calculating MRP (Material Requirements Planning), which is for determining when and how many parts are required. In this type of production management system, a product production plan, item information and configuration information representing the component configuration of a product, component inventory information, order information that is information on a component receipt plan, and information on a component delivery plan are used. MRP is calculated based on certain demand information, and new order information and demand information are obtained. Since the order information indicates the result of parts arrangement, the order information is a plan for parts to be delivered in the future, that is, stocking information. The demand information is required information of lower-order parts necessary for producing an already released order, and is a delivery plan for stock.

In recent years, in order to keep up with rapid changes in market trends and innovations in product technology, there is a strong tendency that production plans and product component configurations are frequently changed. For this reason, production cannot proceed according to the initial plan, and the necessity of replanning order information and the like by recalculating the MRP while reflecting the progress of production at any time increases. I have.

For example, Japanese Patent Application Laid-Open No. 9-38848 discloses a production management system which calculates MRP based on product item information and configuration information, product production plan, and parts inventory information to obtain order information and demand information. An example is shown. In the production management system disclosed in Japanese Patent Application Laid-Open No. 9-38848, a result evaluation unit obtains and outputs evaluation information for evaluating output information including order information and demand information, and provides the evaluation information for calculation of MRP. Every time the input information is changed and the MRP is calculated,
The set of input information and the set of output information are associated with each other in the data management unit, and are retained so as to overlap with those before the change. According to Japanese Patent Application Laid-Open No. 9-38848, MRP
Can quickly judge the validity of order information and demand information as a result of the calculation, evaluate the feasibility of individual order information according to the actual production situation, Problems can be prevented.

[0006]

SUMMARY OF THE INVENTION Incidentally, Japanese Patent Application Laid-Open No.
In a conventional production management system including that disclosed in Japanese Patent No. 38848, there is no way to accurately search whether or not a higher order is feasible, and the high-precision feasibility of the higher order is immediately before the order. Could not be clearly understood. Also, in the conventional production management system described above, it is not possible to accurately determine which product order the lower order is assigned to. I couldn't get it right. Therefore, conventionally,
There is no method for simulating the effect on the higher order or lower order due to a change in the delivery date of the order. For this reason, when placing an order,
Counting the inventory was the only way to determine whether it was really feasible or not, and it took a lot of time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and makes it possible to easily determine the out-of-stock situation with respect to a product-level production plan in a production management system and the feasibility of the production plan at the production planning stage. It is an object of the present invention to provide a production plan support system, a production plan evaluation method, and a recording medium that can make an evaluation decision and enable proper planning or correction of a plan.

[0008]

In order to achieve the above object, a production planning support system according to a first aspect of the present invention provides a demand for demand corresponding to a higher order for each product and part number. To satisfy the quantity,
Tying means for calculating available stock based on stock, order and demand before the required delivery date of the demand and associating it with a lower order to generate tying information; Iteratively searches for the association between the demand corresponding to the current order and the associated order, determines the feasibility of the higher order by searching from the higher order to the lower order, and orders by searching from the lower order to the higher order Search output means for obtaining and outputting at least one of the effects of the delay on the product.

[0009] The associating means may include dynamic associating means for dynamically performing association and regenerating association information in response to a change in order and demand registration states.

[0010] The dynamic linking means may include a means for regenerating the association information only in correspondence with the registration / deletion of the order and demand.

The dynamic linking means includes an intermediate file generating means for generating a linking intermediate file based on a change in the order and demand registration status, and a presence / absence of a change in the order and demand registration status in the linking intermediate file. A resident monitoring unit that constantly monitors, when a change in the registration state is detected by the resident monitoring unit, a linking processing unit that generates a linking information file by associating;
May be included.

[0012] The retrieval output means is a lower member status presenting means for presenting the availability status of the lower component corresponding to the predetermined order, and indicates the availability status of the lower component corresponding to the plan item on the schedule plan. At least one of a schedule plan presenting means for presenting information including information, and an upper / lower order presenting means for presenting, for a specified order, upper and lower orders including information indicating a stock availability status. You may go out.

[0013] In a production plan evaluation method according to a second aspect of the present invention, there is provided an intermediate file generating step of generating a linked intermediate file based on a change in order and demand registration states for each product and part number. And when the registration status of orders and demands in the linking intermediate file changes, the required delivery date of the demands for the demands corresponding to the higher-order orders for each product and part number in order to satisfy the required amount of demands A linking step of calculating the available stock based on the previous stock, order and demand and associating it with a lower order to generate a linking information file, and a demand corresponding to a predetermined order in the linking information file and associating the demand with the demand Repeat the search for the association with the order Search determination of feasibility of higher order by, and having a search output step of outputting to obtain at least one of the determination of the effect of the products of the order delay due to the search for higher order from the lower order.

[0014] The search output step includes a lower member status presenting step for presenting the stock availability of the lower member corresponding to the predetermined order, and a stock availability status of the lower member corresponding to the plan item on the schedule plan. At least one of a schedule plan presenting step of presenting information including information, and an upper / lower order presenting step of presenting, for a specified order, upper and lower orders including information indicating a stock availability situation. You may go out.

[0015] A computer-readable recording medium according to a third aspect of the present invention is a computer-readable recording medium for generating a linking intermediate file based on a change in order and demand registration status for each product and part number. In the file generation step, when the order and demand registration status in the linking intermediate file changes, for the demand corresponding to the higher order for each product and part number, the demand is satisfied in order to satisfy the required amount of demand. A tying step of calculating the available stock based on the stock, order and demand before the required delivery date and associating it with the lower order to generate a tying information file; and a demand corresponding to a predetermined order in the tying information file. Search for the association with the order associated with it A search output step for obtaining and outputting at least one of the determination of the feasibility of the high order by searching from the high order to the low order, and the determination of the influence on the product of the order delay by searching from the low order to the high order. And a program for executing the program are recorded.

In the production plan support system, the production plan evaluation method and the recording medium according to the present invention, the demand corresponding to the higher order for each product and part number is described.
In order to satisfy the required amount of demand, the effective stock is calculated based on the stock, order, and demand before the required delivery date of the demand, and the linked information is generated in association with the lower order. Iteratively searches for the association between the demand corresponding to the order and the order associated with it, determines the feasibility of the higher order by searching from the higher order to the lower order, and reduces the order delay by searching from the lower order to the higher order. Obtain and output at least one of the effects on the product. Therefore, the upper order and the lower order in the production management system can be properly linked, and the status of shortage due to the link can be evaluated and examined, and the shortage status for the product level production plan and the execution of the production plan can be implemented. The quality can be easily evaluated and determined at the stage of drafting the production plan, and an appropriate plan can be drafted or corrected.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

An embodiment of a production planning support system according to the present invention will be described with reference to FIGS.

The production support system according to the present invention associates or links from the highest order corresponding to product level production plan information to the lowest level order information corresponding to member order information or in-house information. This is a mechanism that makes it possible to determine the degree of mutual influence of orders such as the feasibility of a higher order. The linking information representing the linking dynamically corresponds to new order information registered during the day, that is, during operation of a factory or the like, and the target order information is updated as needed.

FIG. 1 schematically shows the principle of a production planning support system according to an embodiment of the present invention. FIG. 1A shows a process of associating a higher order and a lower order for each product number, that is, FIG. FIG. 1 schematically shows the function of the linking process.
(B) schematically shows an image of a linking table representing linking information generated by the linking process.

FIG. 1A schematically shows a basic order and demand state. The order (A001) registered in the part number A uses the demand (A001) of the same number registered in the part number B. Regarding the relationship between the order and the demand that directly correspond to each other, the order and the demand are usually assigned the same number, and thus are not registered as the linking information.

The information actually linked is a case such as an order (B001) for assigning a member to the demand (A001) registered in the part number B, and the demand (A001) registered in the part number B is used. ) And order (B00
1) is registered as the link information.

At the time of linking, the delivery date and effective stock are calculated, and the order and demand are linked for each product number. In calculating the ATP, the order calculates the ATP plus the demand and the demand as the ATP minus. In addition, inventory information is considered as a plus of available inventory,
Can be considered as one order. Since the linking is calculated based on the higher order = demand information, the order before the required date of the demand is linked to the demand so as to satisfy the required amount of the demand. Note that the linking process can handle information that has been “summarized” by MRP calculation or information that has been “rounded” by MRP calculation.

The actual linking process will be specifically described with reference to the product number B in FIG. First, the stock number B has five stocks as stocks at present. And the demand (A
001) 1 has information that the required date is March 10 and the required quantity is 10, and the order (B001) has information that the delivery date is March 1 and the planned number is 5 pieces. In such a situation, the demand (A001) is
As shown by a straight line with arrows at both ends in (a), between the demand (A001) and the current warehouse (referred to as “tied T1”)
In addition, linking can be performed between demand (A001) and order (B001) (referred to as “linking T2”). The link information indicating these links T1 and T2 is registered as a link table shown in FIG.

The linking table shown in FIG. 1B shows, for each linking, items such as a product number, a demand (number), a required date, a required amount, an order (number), a delivery date, a scheduled quantity, and an available stock. Things. In the first line, the order number and the delivery date are not registered because they are linked from the stock. The reason that the required amount in the second line is registered as “0” is that the inventory is also considered to be an order, and the demand is linked with a plurality of orders. This is because it has already been registered as "10" pieces.

When the product number A is considered as a product, the order (A001) registered in the product number A is considered as production plan information. To determine whether the production plan order (A001) is executable, a search is made for a record linked to the demand (A001) assigned the same number as the order (A001). Since the order (B001) can be obtained by this search, it is possible to determine whether or not the order (A001) of the part number A is executable by determining the information of the order (B001).

By repeating such a search,
Searching from the highest order to the lowest order is possible.
Conversely, it is also possible to search from the lowest order to the highest order, so that it is possible to grasp the influence on the product level when the delivery date of the order order of the lowest order is delayed.

Next, with reference to the schematic diagram of the dynamic linking processing system shown in FIG. 2, the dynamic linking process in the daytime, that is, in the operating state of a factory or the like will be described.

The dynamic linking processing system includes a linking intermediate file unit 11, a linking resident process unit 12, and a linking processing unit 13.
And a linking file unit 14. The intermediate file unit 11 stores update data of the order status in response to order fluctuation factors such as order registration, change of delivery date, change of scheduled number, completion report or order release. The associating resident process unit 12 constantly monitors the associating intermediate file unit 11, and activates the associating processing unit 13 according to the update data of the associating intermediate file unit 11. Linking processing unit 1
3 is activated by the linking resident process unit 12,
Each time, the update process and the existing data registered in the linking intermediate file unit 11 are used to execute a linking process between the upper order and the lower order, and the linking information is stored in, for example, the format of the linking table described above. Generated by The linking file unit 14 stores linking information such as a linking table generated by the linking processing unit 13.

That is, the dynamic linking process is performed when the order status changes due to the release or completion of the order.
This is a process of dynamically re-associating when order registration and deletion are performed, when demand registration and deletion are performed, and the like. At this time, an interface file as an intermediate file is stored in the linking intermediate file unit 11 in order to prevent a deadlock or the like from occurring due to a re-linking process being performed during the change of the order state. Create and actually execute the linking process at the timing when the update data is registered in the interface file.

For example, when a transaction occurs, the update data is registered in the interface file of the linking intermediate file unit 11. Linking intermediate file section 11
The presence / absence of update data in the interface file is constantly monitored by the resident process of the association resident process unit 12, and when the update data is registered, the association processing unit 13 is activated. The linking processing unit 13 performs linking processing, obtains linking information such as a linking table, and stores the linking information in the linking file unit 14.

With reference to FIGS. 3A to 3D, a specific example when a new demand is registered will be described.

FIG. 3A is a schematic diagram of the initial linking state, and FIG. 3B is a linking table in the initial linking state. As illustrated, in the initial state, there are five current warehouses for the product number B, and three demands (A00).
1) to (A003) and four orders (B001)
(B004) exists. The demand (A001) is a demand with a required amount of 10 pieces on March 10, and the demand (A
002) is a demand with a required amount of 15 pieces on March 20, and a demand (A003) is a demand with a required amount of 10 pieces on March 31. The order (B001) is scheduled to be delivered on March 1 with the expected number of 5 items, and the order (B002) is March 12
The scheduled delivery date is 10 orders, the order (B003) is the scheduled delivery date of March 18 and the planned number is 10 orders, and the order (B004) is the delivery date of March 25 and the scheduled number is 5 orders. The linking at this time includes a linking T11 between the demand (A001) and the current warehouse, a linking T12 between the demand (A001) and the order (B001), a demand (A002) and the order (B002). T1 between
3, link T14 between demand (A002) and order (B003), demand (A003) and order (B0)
03) and demand (A00)
Tying T16 between 3) and order (B004) is performed.

When a demand is newly registered, first, a required date of newly registered demand information is acquired. Compare the acquired required date with the required date of the demand information of the already registered link, and search for the required date before the required date of new registration. If there is no corresponding search result, the newly registered demand information is relinked from the stock information. If there is a search result, re-association is performed based on information associated with the demand after the association.

In the tying process, tying is performed sequentially on orders having delivery dates before the required date of demand until the required amount of demand is satisfied. In normal operation, the required amount of demand can be satisfied at the time of linking, but the required amount of demand may not be able to be satisfied due to a change in order delivery date, a change in the number of schedules, or the like. In such a case, the higher order of the demand determines that the lower member is missing.

That is, in the initial tying state shown in FIGS. 3A and 3B, the tying when the demand (A004) of the required amount 10 is newly registered and the required date is March 15 is newly illustrated. 3 (c) and (d). FIG. 3 (c)
Shows a schematic diagram after re-linking and FIG. 3D shows a linking table after re-linking. Demand (A004)
Is registered, the link T11 between the demand (A001) and the current warehouse and the link T12 between the demand (A001) and the order (B001) do not change, and the current warehouse and the order (B001) are not changed. Are all allocated to the demand (A001). New demand (A
Regarding 004), a link T21 is applied to the order (B002). The demand (A004) requires all 10 scheduled deliveries of the order (B002). Therefore, for the demand (A002) with a required date of March 20, only the order (B003) can be linked to the required amount of 15 pieces, and the demand (A002)
T22 is applied between the order and the order (B003). However, for the required amount of demand (A002) of 15 pieces, the order (B00
3) Only 10 items are scheduled to be delivered, and the demand (A
002) becomes negative (−5). Therefore, the order of the demand (A002) cannot be executed. In such a case, a new order is registered before the demand (A002), the required number or the required date of the demand (A002) is changed, or the demand (A002) is changed.
2) must be deleted or other measures must be taken. At this time, the demand (A003) and the order (B00)
4), a linking T23 is performed, but in reality, there is a possibility that the linking will change due to re-linking or the like based on the treatment of the problem of the missing item in the demand (A002).

In the above description, the processing for newly registering demand information has been described. However, the same processing as the above-described demand information registration processing is performed for order information registration / deletion and demand information deletion.

Here, a description will be given of a change in linking information accompanying a change in order information due to an order release or the like. Regarding the change of the order information, the re-linking process as described above is not performed. This is because when the order is released, the delivery date is changed, the scheduled number is changed, etc., if re-association processing is performed, the demand information that affects will be shifted, making it difficult to find the order that really affects It is because it becomes.

Next, there are the following two methods for actually grasping the status of the lower order.

In the first method, as shown in FIG. 4, a screen for displaying whether or not the lower order member is out of stock for the lower order member to determine whether the order to be executed is feasible. I will provide a.

In the search, by inputting the order number to be executed, the order number input to the demand number of the linking information is set, and the search is performed. To get.

The available stock amount of the acquired linking information is determined, and if the stock is in minus stock and the order has a delivery date after the required date of the demand, it means that the available stock is insufficient and cannot be executed. The member number column of the corresponding lower member is displayed in red, for example. The status of the lower member is determined as other information, and the corresponding column is displayed in color. For example, the delivery date is equal to or earlier than the required date of the demand and is unreleased, orange if the delivery date is equal to the required date and has been released, yellow if the delivery date is before the required date and has been released, and If it is allocated from stock, it is displayed as green or the like. With such a display, attention is given to the lower member in addition to the missing item, so that the order can be determined. Such a function can also be used on a schedule planning screen as shown in FIG. 5, and it can be determined at the stage of planning that execution is impossible, difficult, or possible.

In the second method, when order information is input,
The upper order and the lower order are searched and displayed on the screen (see FIGS. 6 and 7). By using these screens, it is possible to ascertain which lower member affects the highest order, and to grasp the progress of the lower member (order). Conversely, it is possible to grasp which product order the ordering member leads to, and it is possible to simulate which product order is affected when the delivery date of the order is changed.

Therefore, the above-described production planning support system has a linking unit and a search output unit. In this case, the tying means, for the demand corresponding to the higher order for each product and product number, satisfies the required amount of the demand, and stores the available stock based on the order and demand before the required delivery date of the demand. Calculate and associate it with the lower order to generate linking information. The search output unit repeats the search for the association between the demand corresponding to the predetermined order and the order associated therewith in the linking information generated by the linking unit, and searches for the higher order from the higher order to the lower order. And at least one of the determination of the feasibility of the order and the determination of the influence on the product of the order delay due to the search from the lower order to the higher order are obtained and output.

The associating means may include a dynamic associating means for dynamically associating and regenerating association information in response to a change in the registered state of the order and demand. In this case, the dynamic linking means may include a means for regenerating the association information only in correspondence with the registration / deletion of the order and the demand.

The dynamic linking means described above may include an intermediate file generating means, a resident monitoring means, and a linking processing means. The intermediate file generating means generates a linked intermediate file based on a change in the order and demand registration states. The resident monitoring means constantly monitors whether there is a change in the order and demand registration status in the linked intermediate file. When the resident monitoring unit detects a change in the registration status, the association processing unit performs association to generate an association information file.

Further, the search output means may include at least one of lower-order member status presenting means, schedule plan presenting means, and upper and lower order presenting means. In this case, the lower member status presenting means presents the stock possibility status of the lower member corresponding to the predetermined order. The schedule plan presenting means presents the schedule including information indicating the stock availability of the lower-level members corresponding to the plan items. The upper and lower order presenting means presents, for the specified order, the upper and lower orders including information indicating the availability status of the stock.

The production planning support system of the present invention
It can be realized by using a normal computer system without configuring as a dedicated system. For example, a medium (floppy (registered trademark)) storing a program for executing the above operation in a computer system
By installing the program from a disk, CD-ROM, or the like), a production planning support system that executes the above-described processing can be constructed. By the installation, the program is stored in a medium such as a hard disk in the computer system, configures a production planning support system, and is provided for execution.

The medium for supplying the program to the computer is not limited to a storage medium in a narrow sense, but may be a communication line,
Like a communication network and a communication system, it may be a storage medium in a broad sense including a communication medium that temporarily and fluidly stores information such as a program.

For example, the program may be registered in an FTP (File Transfer Protocol) server provided on a communication network such as the Internet, and distributed to an FTP client via the network. An electronic bulletin board (BBS: Bulletin) of the communication network may be used. The program may be registered in a board system or the like and distributed via a network. Then start this program and run the OS
The above processing can be achieved by executing under the control of the (Operating System). Furthermore, the above-described processing can also be achieved by starting and executing the program while transferring the program via the communication network.

[0051]

As described above, according to the present invention,
The out-of-stock situation for the product level production plan in the production management system and the feasibility of the production plan can be easily evaluated and determined at the stage of drafting the production plan, and the appropriate plan can be drafted or modified. A production plan support system, a production plan evaluation method, and a recording medium can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic diagram for explaining the principle operation of a tying process in a production plan support system according to an embodiment of the present invention, where (a) is a diagram schematically showing tying, and (b) is a diagram schematically showing the tying; It is a figure which shows the image of a linking table typically.

FIG. 2 is a system configuration diagram for explaining an operation of the production planning support system of FIG. 1;

FIG. 3 is a schematic diagram for explaining an operation of a dynamic linking process in the production plan support system according to FIG. 1;
(A) is a diagram schematically showing an initial linking state, (b) is a diagram schematically showing an image of a linking table in the initial linking state, and (c) is a diagram schematically showing a linking state at the time of new demand registration. FIG. 7D is a diagram schematically showing an image of a link table in a link state at the time of new demand registration.

FIG. 4 is a view showing an example of a lower member missing item information confirmation screen for explaining the operation of the production planning support system of FIG. 1;

FIG. 5 is a diagram showing an example of a schedule planning screen using out-of-stock information for explaining the operation of the production planning support system of FIG. 1;

FIG. 6 is a diagram showing an example of an upper order / lower order search screen for explaining the operation of the production planning support system of FIG. 1;

FIG. 7 is a diagram showing another example of a higher order / lower order search screen for explaining the operation of the production plan support system of FIG. 1;

[Explanation of symbols]

 T1 Tying T2 Tying T11 Tying T12 Tying T13 Tying T14 Tying T15 Tying T16 Tying T21 Tying T22 Tying T23 Tying

Claims (8)

[Claims] Claims: 1. For a demand corresponding to a higher order for each product and product number, an effective stock is calculated based on the stock, order and demand before the required delivery date of the demand so as to satisfy the required amount of demand. A linking unit that generates linking information in association with a lower order, and repeatedly searches for an association between a demand corresponding to a predetermined order in the linking information generated by the linking unit and an order associated therewith Search output means for obtaining and outputting at least one of determination of feasibility of a higher order by searching from a higher order to a lower order, and determination of influence of a product delayed by a search from a lower order to a higher order. , A production planning support system comprising: 2. The apparatus according to claim 1, wherein said linking means includes dynamic linking means for dynamically associating and regenerating the association information in response to a change in the order and demand registration states. Item 2. The production planning support system according to item 1. 3. The production planning support system according to claim 2, wherein said dynamic linking means includes means for regenerating association information only in correspondence with registration / deletion of orders and demands. . 4. An intermediate file generating means for generating a linking intermediate file based on a change in order and demand registration status, and a change in order and demand registration status in the linking intermediate file. Resident monitoring means for constantly monitoring the presence / absence of, and linking processing means for generating a linking information file by associating when a change in the registration state is detected by the resident monitoring means. 3. The production planning support system according to claim 2, wherein 5. The retrieval output means includes: a lower member status presenting means for presenting a stock availability status of a lower member corresponding to a predetermined order; and a stock availability status of a lower member corresponding to a plan item on a schedule plan. And / or upper and lower order presenting means for presenting the higher order and lower order of the specified order including information indicating the availability status of the specified order. The production planning support system according to any one of claims 1 to 4, further comprising: 6. An intermediate file generating step of generating a linking intermediate file based on a change in order and demand registration states for each product and part number, and the order and demand registration states in the linking intermediate file are When the demand changes, for the demand corresponding to the higher order for each product and part number, the effective stock is calculated based on the stock, order and demand before the required delivery date of the demand in order to satisfy the required quantity of demand. A linking step of generating a linking information file by associating with a lower order, and repeatedly searching for a demand corresponding to a predetermined order in the linking information file and an order associated with the demand, Determine the feasibility of the higher order by searching the lower order, and Production plan evaluation method characterized by having a search output step of outputting to obtain at least one of the determination of the effect of the products of the order delay due to the search for higher order from the lower order. 7. The retrieval output step includes: a lower member status presenting step of presenting a stock availability status of a lower member corresponding to a predetermined order; and a stock availability status of a lower member corresponding to a plan item on a schedule plan. At least one of a schedule plan presenting step of presenting information including information indicating a stock order, and an upper / lower order presenting step of presenting the upper and lower orders of the specified order including information indicating the availability status of the stock. 7. The production plan evaluation method according to claim 6, comprising: 8. An intermediate file generating step of generating a linking intermediate file based on a change in the order and demand registration status for each product number indicating a product and a member, and registering the order and demand in the linking intermediate file. When the status changes, calculate the effective stock based on the stock, order and demand before the required delivery date of the demand, in order to satisfy the required quantity of the demand corresponding to the higher order for each product and part number indicating the material A linking step of generating a linking information file by associating the order with the lower order, and repeatedly searching for an association between the demand corresponding to the predetermined order and the order associated therewith in the linking information file, Execute higher order by searching from order to lower order A program for executing a search output step of obtaining and outputting at least one of the determination of the performance and the determination of the influence on the product of the order delay due to the search from the lower order to the higher order. Computer readable recording medium.