JP3210572B2 - Inventory arrangement method and inventory arrangement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inventory arrangement method for carrying out inventory arrangement by production or procurement of goods and an apparatus therefor, and more particularly, to an inventory arrangement method capable of minimizing shortage and excess inventory, and an inventory arrangement method therefor. Related to the device.

[0002]

2. Description of the Related Art In recent years, with the progress of production technology, it is difficult to differentiate products from other companies, and it is important to prevent shortage and comply with customer's required delivery date. The diversification trend has led to an increase in the number of product lineups, and inventory burdens have put pressure on management.

[0003] As a conventional inventory arrangement method, for example, as described in page 132 of "Story of Inventory Management" (published by Nikka Giren Publishing Company on February 5, 1988 by Shigeru Yanagisawa),
There has been a method in which the actual stock is withdrawn from the order confirmation information and a preset replenishment amount is arranged when the inventory amount falls below a preset replenishment point.

[0004]

SUMMARY OF THE INVENTION As a result of studying the above prior art, the present inventor has found the following problems.

[0005] In the former inventory management method, it is difficult to keep up with fluctuations in demand because inventory is arranged only from order confirmation information without considering expected order information. There has been a problem that excess inventory is likely to occur due to a decrease in demand after arrangement.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and it is an object of the present invention to provide a method for arranging inventory which realizes prevention of shortage and excess inventory.

The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0008]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

The storage device stores order information, which includes a delivery date, an order quantity, and the order accuracy of a product, and reference day information by order accuracy for managing the order accuracy of each product represented by a relative period from the delivery date. Storing and calculating the required accuracy of each order from the reference date information for each order accuracy and the delivery date of the order information, and calculating a period for each accuracy zone that defines the required order accuracy, based on the accuracy zone time period. Calculates the accuracy zone and, based on the order accuracy defined for each combination of the order accuracy and the accuracy zone previously stored in the storage device, corresponds to the order accuracy and the accuracy zone of the order information. The ordering coefficient to be extracted is extracted, the ordering amount of the ordering information is multiplied by the ordering coefficient to calculate a net ordering amount, and inventory is arranged based on the calculated net ordering amount.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, the outline of each drawing will be described.

FIG. 1 is a diagram showing a system configuration of an inventory arrangement device for realizing an inventory arrangement method according to an embodiment of the present invention. The inventory arrangement device includes an input device 10, a screen display device 20, a processing device 30, Storage device 40 and output device 50
, And is connected to an order receiving system 80 and an order receiving system 90, which are external systems, via the storage device 40. The processing device 30 includes an order receiving accuracy rank-up alarm processing unit 60 and a net order quantity calculation processing unit 70, Storage device 40
Has an order information DB 300, a reference date information table 301 by order probability, an order coefficient information table 302, and a net order information DB 303.

FIG. 2 is a diagram showing the relationship between the order-accuracy rank-up alarming processing section 60 and the net arrangement quantity calculation processing section 70 included in the processing apparatus 30 shown in FIG. FIG.

FIG. 3 is a diagram showing an example of the data structure of each table stored in the storage device 40 in FIG.

FIG. 4 is a flowchart showing the processing steps of the above-described order accuracy ranking up alarm processing section 60.

FIG. 5 shows the above-mentioned net arrangement amount calculation processing section 7.
It is a figure showing the flowchart which shows the processing step of 0.

FIG. 6 is a diagram showing the relationship between the reference number of days information by order probability and the period by accuracy zone.

FIG. 7 is a diagram showing an image of calculating a period for each accuracy zone.

FIG. 8 is a diagram showing a portion to be output to the order accuracy rank up alarm list shown in FIG.

FIG. 9 is a view showing an output image of the order accuracy rank up alarm list shown in FIG.

Next, the operation of the processing device 30 comprising the rank-up alarm processing unit 60 and the net arrangement amount calculation processing unit 70 shown in FIG. 1 will be described in detail with reference to FIGS. .

First, the relationship between the order-accuracy rank-up alarming processing section 60 and the net arrangement quantity calculation processing section 70 included in the processing apparatus 30 shown in FIG. This will be described with reference to FIG.

The order receiving system 80, which is an external system,
This is a system for registering and updating order information in a product code column 311, a customer code column 312, a delivery date column 313, a quantity column 314, and an actual order accuracy column 315 of the order information DB 300.

Based on the order information DB 300 and the information in the order date-specific reference date information table 301, the order accuracy rank-up alarm processing unit 60 receives order information or an order whose accuracy is lower than the order accuracy set in the order accuracy zone. Detects the occurrence of order information that needs to be ranked higher in accuracy, and generates order information with order accuracy that is lower than the order accuracy set in the accuracy zone or order information that needs to rank up the order accuracy. If this is done, a warning (ordering accuracy rank up alarm list 304) is output (details will be described later).

The net arrangement amount calculation processing section 70 receives the order information D
Based on the information in B300, the reference date information table 301 by order accuracy, and the order coefficient information table 302, the order quantity of the order information is multiplied by the order coefficient to calculate the net order quantity, and the net order information DB 303 is updated. (Details will be described later).

The ordering system 90, which is an external system,
The product code column 35 of the updated net arrangement information DB
1, a system for calculating order information based on information stored in a date column 352 and a net order amount column 353.

Each of the above-described order information DB 300, order-by-probability-based reference days information table 301, order coefficient information table 302, and net order quantity information DB 303 includes, for example, an information column for each product as shown in FIG. Is provided.

As shown in FIG. 3A, the order information DB 300 is provided with a product code column 311, a customer code column 312, a delivery date column 313, a quantity column 314, and an order accuracy column 315 for each product. In particular, "K" is displayed in the order accuracy column 315.
Each piece of information, such as “A” and “B”, for indicating the accuracy of a predefined order is stored.

The order accuracy is the degree of confirmation of the order information. For example, “order accuracy B” is a stage at which a customer has negotiated an order, “order accuracy A” is a stage at which a customer has received an order indication from a customer, Accuracy K ”indicates the stage at which the order has been confirmed,
"Order accuracy K" and "order accuracy A" in descending order of order accuracy
"Order accuracy B" is set.

Reference date information table 301 by order accuracy
FIG. 3B is a table showing a reference number of days for each order probability for each product, which is indicated as the number of days remaining until the customer's delivery date, as shown in FIG. 3B. As shown in FIG. The reference days ("Accuracy K days") are (k) days, "Order accuracy A"
Is assumed to be (k + a) days, and each of these reference days is stored in the product code column 32 for each product.
1, stored as a probability K days field 322 and a probability A days field 323. The accuracy K days field 322 and the accuracy A days field 32
3 and the delivery date 313 of the product, a later-described accuracy zone is calculated.

The accuracy zone is information indicated by a period including a current date (system date) and a date calculated based on information on a reference number of days by order accuracy for each product. It shows the expected order accuracy at (system date).

As shown in FIG. 6, each order received is obtained by adding (k) date and (k + a) date to the current date (system date (X) date) and the order-specific information for each order accuracy. The last day of the accuracy zone is calculated, and the accuracy zone (“accuracy B zone”) of “accepted order accuracy B” is (X + (k + a + 1)) days to
The accuracy zone ("Accuracy A zone") of "Order accuracy A"
(X + (k + 1)) day to (X + (k + a)) day, the accuracy zone (“Accuracy K zone”) of “order accuracy K” is (X + 1) day to
(X + k) days are set.

In addition, “order accuracy B”, “order accuracy A”,
Order accuracy such as “order accuracy K” and the number of stages, reference days corresponding to each order accuracy (k) days, (k + a)
The date can be arbitrarily set based on product characteristics, customer characteristics, and the like.

To be more specific, referring to FIG. 7, the current date (system date) is 2/1, and the reference number of days information by order probability is "accuracy K zone" is 3 days, and "accuracy A zone" is 6 days. The accuracy zones calculated as a result are as follows: “Accuracy K zone” is 2/2 to 2/4, “Accuracy A zone” is 2/5 to 2/7, and “Accuracy B zone” is 2 / 8-
Since the delivery date of the order information is 2/6, the delivery date is positioned at 2/5 to 2/7, which is the “accuracy A zone”, and the order date that should be the current date (system date) The accuracy indicates "accepted order accuracy A".

In the arrangement coefficient information table 302, FIG.
As shown in (c), for each product, a product code column 331,
KK ordering coefficient column 333 which is an ordering coefficient when accuracy K zone 332 and order accuracy K, accuracy K zone 332
KA ordering coefficient column 334 which is an ordering coefficient when order accuracy is A, accuracy K zone 332, and order accuracy B
In the KB arrangement coefficient column 335 and the accuracy A zone 336, which are the arrangement coefficients when, and the AK arrangement coefficient column 337 and the accuracy A zone 336 which are the arrangement coefficients when the order accuracy is K,
In the AA ordering coefficient column 338 and the accuracy A zone 336 which are the ordering coefficient when the order accuracy is A, and in the AB order coefficient column 339 and the accuracy B zone 340 which are the order coefficient when the order accuracy is B. BK order coefficient column 341 which is the order coefficient when the accuracy is K, BA order coefficient column 3 which is the order coefficient when the accuracy B zone 340 and the order accuracy is A
42, a BB order coefficient column 343 which is an order coefficient when the order accuracy is B in the accuracy B zone 340, and in particular, each order coefficient column stores numerical information indicating a predefined order coefficient. You.

As shown in FIG. 10, the above-mentioned order coefficient information includes the accuracy zone (the order accuracy that should be the current date (system date)) and the order accuracy (the actual order accuracy in the order information). Is defined in advance for each combination.

The order coefficient information is used for calculating a net order quantity to be described later corresponding to the order accuracy state of the order information, and the net order quantity is determined by the order selected in the quantity of the order information. It is calculated by multiplying by a coefficient.

The order coefficient for each combination of the accuracy zone and the actual order accuracy can be arbitrarily set according to the product characteristics, customer characteristics, inventory strategy, and the like.

FIG. 3 shows the net quantity information DB 303.
As shown in (d), for each product, a product code column 351,
A date field 352 and a net order quantity field 353 are provided.

The net order quantity at this time is calculated by multiplying the quantity of the order information by the selected order coefficient.

Next, the actual processing steps of the inventory arrangement method according to this embodiment will be described with reference to the flowcharts of FIGS.

First, the processing steps of the order accuracy rank raising alarm processing section 60 will be described in detail with reference to the flowchart of FIG.

First, the order accuracy rank up alarm processing section 60 reads the system date (step 40).
1).

Next, the order-accuracy rank-up alarm processing unit 60 reads one order information from the order information DB 300 (step 402). The order information DB 30
The information of the merchandise code column 311, the customer code column 312, the delivery date column 313, the quantity column 314, and the actual order accuracy column 315 of 0 has been registered and changed by the order receiving system 80 which is an external system. In this case, it is assumed that the information has been updated.

Next, the order-accuracy rank-up alarm processing unit 60 receives the order information D read in step 402.
Based on the product code stored in the product code column 311 of B, the reference day information table 301 by order probability corresponding to the product code is read (step 403).

Next, the order-accuracy rank-up alarming processing unit 60 determines the system date read in step 401 and the accuracy K zone column 322 and the accuracy A zone column 323 in the order date certainty reference date information table 301 read in step 403. Is calculated based on the respective values stored in the order information (step 404).

Next, the order-accuracy rank-up alarm processing unit 60 calculates where the delivery date stored in the delivery date column 313 of the order information DB is positioned in the accuracy zone-based period calculated in step 404. By
The accuracy zone at the current date (system date) (the expected order accuracy at the current date (system date)) is calculated (step 405).

Next, the order-accuracy rank-up alarm processing unit 60 calculates the delivery date stored in the delivery date column 313 of the order information DB and the order accuracy stored in the order accuracy column 315 and the accuracy zone calculated in step 404. It is determined whether or not to output a “zone boundary alarm” based on another period and the accuracy zone calculated in step 405 (step 406).

The "zone boundary alarm" is an alarm that is output for order information for which the order accuracy should be ranked up to the next day after the current date (system date), that is, as shown in FIG. Order information whose order accuracy is B and the delivery date is the first day (2/8) of the accuracy B zone, or order information whose order accuracy is B and the delivery date is the first day (2/5) of the accuracy A zone; Alternatively, order information whose order accuracy is A and whose delivery date is the first day (2/5) of the accuracy A zone is output.

In step 406, the order information determined to be the output target of the "zone boundary alarm" is
The order-accuracy rank-up alarming processing unit 60 determines the information stored in each information column of the order-information DB 300, the period for each accuracy zone calculated in step 404, and step 40.
Based on the accuracy zone calculated in step 5, the output device 50 outputs an "order accuracy ranking up alarm list (zone boundary alarm)" (step 407).

FIG. 9 shows an output image of the "order-of-accuracy rank-up alarm list (zone boundary alarm)".

In FIG. 9, the contents of the order information include a product code of P0001, a customer code of C0002, and a delivery date of 2 /
5. The quantity is 100, the order accuracy is A, the accuracy zone (the order accuracy that should be the current date (system date)) is A, and the order accuracy is ranked from A to K with 2/2 as the deadline. Indicates that it must be raised. That is, the example of the “zone boundary alarm” in FIG.
In step 406, the order acceptability in FIG. 8 is A and the delivery date (2/5) is the first day (2 /
This is an example in which the order information is determined to be 5).

Next, the order-accuracy rank-up alarm processing unit 60 calculates the delivery date stored in the delivery date column 313 of the order information DB and the order accuracy stored in the order accuracy column 315 and the accuracy zone calculated in step 404. Based on another period and the accuracy zone calculated in step 405, it is determined whether or not to output the "order accuracy difference alarm" (step 408).

This "order accuracy difference alarm" is an alarm that is output for order information whose rank is lower than the accuracy zone (order accuracy that should be the current date (system date)). That is, as shown in FIG. 8, the order accuracy is B and the delivery date is in the accuracy A zone (2
/ 6 or 2/7), or the order accuracy is B and the delivery date is in the K zone (2/2 or 2/3)
Or 2/4), or the order information whose order accuracy is A and the delivery date is the accuracy K zone (2/2 or 2/3 or 2/4) is to be output.

Here, with respect to the order information whose order accuracy is B and the delivery date is the first day (2/5) of the accuracy A zone, it is determined in step 406 that the “zone boundary alarm” is to be output, and in step 407 Since the "order accuracy ranking up alarm list (zone boundary alarm)" is output, it is excluded from the "order accuracy difference alarm".

In step 408, the order accuracy rank-up alarm processing unit 60 determines whether or not the order information determined to be the output target of the “order accuracy difference alarm” is output.
Based on the information stored in each information column of the order information DB 300 and the order accuracy zone calculated in step 405, the output device 50 outputs an "order accuracy rank up alarm list (order accuracy difference alarm)" (step 40).
9).

FIG. 9 shows an output image of the “order-of-accuracy rank-up alarm list (order-of-accuracy difference alarm)”. In FIG. 9, the content of the order information is the product code P0.
002, the customer code is C0003, the delivery date is 2/7, the quantity is 50, the order accuracy is B, the order accuracy zone (order accuracy that should be the current date (system date)) is A, and Shows that the order accuracy must be upgraded from B to A. That is, in the example of the “order accuracy difference alarm” in FIG. 9, in step 408, the order accuracy in FIG. 8 is B and the delivery date (2
/ 7) is the order information with the order accuracy A zone (2/6 or 2/7).

Next, the order-accuracy rank-up alarming processing section 60 determines whether or not the processing of steps 402 to 409 has been performed for all the order information stored in the order information DB 300 (step 410).

If order information that has not been processed remains, the process proceeds to step 40 for the remaining order information.
Steps 2 to 409 are repeated. If the processing of steps 402 to 409 has been completed for all pieces of order information, the order-accuracy rank-up alarm processing unit 60 ends the processing.

Next, the processing steps of the net arrangement amount calculation processing section 70 will be described in detail with reference to the flowchart of FIG.

First, the net arrangement amount calculation processing section 70 reads the system date (step 501).

Next, the net arrangement amount calculation processing section 70 initializes information stored in each information column of the net arrangement amount information DB (step 502).

Next, the net order quantity calculation processing section 70 reads one piece of order information from the order information DB 300 (step 503).

Next, the net order quantity calculation processing section 70 sets the product code field 3 of the order information DB read in step 503.
Based on the product code stored in No. 11, the reference date information table 301 by order probability corresponding to the product code is read (step 504).

Next, the net arrangement quantity calculation processing section 70 sets the system date read in step 501 and the system date read in step 504.
Based on the values stored in the accuracy K days field 322 and the accuracy A days field 323 of the order probability-specific reference days information table 301 read in step 5, the accuracy zone-based period of the order information is calculated (step 505).

The process of calculating the order-by-acceptance-zone-based period in step 505 is the same as the process in step 404 of the order-accuracy rank-up alarm processing unit 60.

Next, the net arrangement amount calculation processing unit 70 calculates where the delivery date stored in the delivery date column 313 of the order information DB is positioned in the accuracy zone-based period calculated in step 505, The accuracy zone at the current date (system date) (the expected order accuracy at the current date (system date)) is calculated (step 506).

The process of calculating the accuracy zone in step 506 is performed by the order-accuracy rank-up alarm processing unit 60
Is the same as the processing step 405 of FIG.

Next, the net order quantity calculation processing unit 70 uses the order coefficient information table 302 based on the order accuracy stored in the order accuracy column 315 of the order information DB and the accuracy zone calculated in step 506. An arrangement coefficient to be read is read (step 507).

FIG. 10 shows a display example of the read arrangement coefficient on the screen display device 20.

In FIG. 10, the product code of the order information is P0
001, the order accuracy is B, and the delivery date is 2/6. Since the delivery date 2/6 corresponds to the accuracy A as the accuracy zone, AB
The arrangement coefficient (0.5) is read as the corresponding arrangement coefficient.

Next, the net order quantity calculation processing unit 70 calculates the net order quantity based on the quantity stored in the quantity field 314 of the order information DB and the order coefficient read in step 507 (step 508). ).

For example, as shown in FIG. 10, the quantity of the order information is 100, the delivery date is 2/6, and the order coefficient read in step 507 is the AB order coefficient (0.5). The net order quantity of the product code P0001 in No. 6 is calculated as 100 × 0.5 = 50 by multiplying the quantity by the order coefficient.

Next, the net arrangement amount calculation processing section 70 stores the corresponding product code and date in the net arrangement amount column 353 of the net arrangement amount information DB 303 based on the net arrangement amount calculated in step 508. The net arrangement information DB 303 is updated in such a manner that the net arrangement quantity is added to the net arrangement quantity (step 509).

FIG. 11 shows a display example of the data of the net arrangement information DB 303 on the screen display device 20.

In the example shown in FIG. 11, since the net arrangement amount of the product code P0001 in 2/6 at step 508 is calculated as 50, the product code P0 in FIG.
001, the net order quantity 50 is displayed in the column of 2/6 for the date.

Next, the net arrangement amount calculation processing section 70 determines whether or not the processing of steps 503 to 509 has been performed on all the order information stored in the order information DB 300 (step 510).

If order information that has not been processed remains, the process proceeds to step 50 for the remaining order information.
Steps 3 to 509 are repeated. If the processing of steps 503 to 509 has been completed for all order information, the net order quantity calculation processing unit 70 ends the processing, and the ordering system 90, which is an external system, enters the product code field of the net order information DB303. 351, a date field 352,
The order information is calculated based on each information stored in the net order quantity column 353.

Therefore, as described above, the order receipt information for managing the order receipt accuracy for each product represented by the order information including the delivery date, order quantity, and the order accuracy of the product and the relative period from the delivery date. The other reference days information is stored in a storage device, and the order days required for each order are defined from the reference days information according to the order accuracy and the delivery date of the order information. A probability zone corresponding to the current date is calculated based on the order information, and based on order coefficient information defined for each combination of the order accuracy and the accuracy zone previously stored in the storage device, the order information of the order information is calculated. The order quantity and the order coefficient corresponding to the accuracy zone are extracted, the order quantity of the order information is multiplied by the order coefficient to calculate a net order quantity, and inventory is arranged based on the calculated net order quantity. And makes it possible to arrange the stock quantity corresponding to the actual demand based on the orders accuracy of order information, it can be realized and shortage prevention and excess inventory prevented.

Also, the occurrence of order information whose order accuracy is lower than the order accuracy in the accuracy zone or occurrence of order information for which the order accuracy should be ranked higher is detected, and the order information or order whose order accuracy in the order information is lower than the accuracy zone is detected. By giving a warning (ordering accuracy rank-up alarming) when order information for which accuracy is to be raised is generated, it becomes easy to obtain a predetermined order accuracy by a predetermined date, and as a result, a predetermined order accuracy is obtained. It becomes easier to arrange inventory based on the order information of the order accuracy, and it is possible to prevent shortage and excess inventory.

In the inventory arranging method according to the present invention, the ordering system 90 uses any ordering method (for holding an item inventory and ordering an item according to an irregular fixed-quantity ordering method, an irregular irregular-quantity ordering method, or a regular irregular-quantity ordering method). Or a method of ordering a product by order production without holding the product inventory).

As described above, the invention made by the present inventor is:
Although specifically described based on the embodiment, the present invention
It is needless to say that the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the scope of the invention.

[0082]

The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.

It is possible to arrange the stock amount according to the actual demand based on the order accuracy of the order information, and it is possible to prevent the shortage and the excess stock.

[Brief description of the drawings]

FIG. 1 is a diagram showing a system configuration of an inventory arrangement device for realizing an inventory arrangement method according to an embodiment of the present invention.

FIG. 2 is an ordering accuracy rank-up alarming processing unit 60;
FIG. 4 is a diagram for explaining the relationship between a net arrangement amount calculation processing unit 70, tables stored in a storage device 40, and DBs.

FIG. 3 is a diagram showing a data configuration example of each table accommodated in a storage device 40;

FIG. 4 is a flowchart showing the processing steps of the above-described order certainty rank up alarm processing unit 60.

FIG. 5 is a diagram showing a flowchart showing processing steps of the above-described net arrangement amount calculation processing section 70.

FIG. 6 is a diagram for explaining a relationship between reference day information by order probability and a period by accuracy zone;

FIG. 7 is a diagram for specifically explaining the calculation of a period for each accuracy zone.

FIG. 8 is a diagram illustrating a part to be output with an order reliability ranking up alarm list.

FIG. 9 is a diagram showing an output image of an order accuracy rank up alarm list.

FIG. 10 is a diagram showing a display example of a read arrangement coefficient on the screen display device 20.

FIG. 11 is a diagram showing a display example of the data of the net arrangement information DB 303 on the screen display device 20.

[Description of Signs] 10 ... Input device, 20 ... Screen display device, 30 ... Processing device, 40 ... Storage device, 50 ... Output device, 60 ... Order accuracy rank up alarming processing unit, 70 ... Net arrangement amount calculation processing unit , 80 ... Order receiving system (external system), 90
… Order system (external system), 300… Order information D
B, 301: Reference day information table by order accuracy, 302
... arrangement coefficient information table, 303 ... Net arrangement amount information D
B.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-175871 (JP, A) JP-A-4-180165 (JP, A) JP-A-5-73591 (JP, A) JP-A-5-73591 342220 (JP, A) JP-A-7-93410 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 17/60 116 B23Q 41/08 JICST file (JOIS)

Claims (3)

(57) [Claims] Claims: 1. Store order information including a delivery date, an order quantity, and the order accuracy of a product, and reference date information by order accuracy for managing the order accuracy of each product represented by a relative period from the delivery date. Stored in the device, calculate the accuracy zone period to define the required order accuracy for each date from the order accuracy accuracy reference days information and the delivery date of the order information, the current date based on the accuracy zone time period A corresponding accuracy zone is calculated, and based on order coefficient information defined for each combination of the order accuracy and the accuracy zone previously stored in the storage device, the order accuracy and the accuracy zone of the order information. An inventory coefficient corresponding to the order information is extracted, a net order quantity is calculated by multiplying the order quantity of the order information by the order coefficient, and inventory is arranged based on the calculated net order quantity. 2. The inventory arrangement method according to claim 1, wherein after calculating the accuracy zone, the order accuracy of the order information is lower than the order accuracy defined in the accuracy zone.
Or, the occurrence of the order information to rank up the order accuracy is detected, and the order accuracy of the order information is lower than the order accuracy defined in the accuracy zone, or the order information to rank up the order accuracy occurs. A method of arranging inventory, which warns in case. 3. A means for holding order information including a delivery date, an order quantity, and the order accuracy of a product, and a different order accuracy for managing the order accuracy for each product represented by a relative period from a customer delivery date. Means for holding reference day information, means for holding order coefficient information defined for each combination of the order accuracy and the accuracy zone, and are required based on the current date and the reference day information for each order accuracy. Means for calculating a certainty zone period for defining the order accuracy for each date; means for calculating a certainty zone corresponding to the current date based on the delivery date of the order information and the certainty zone period; and Means for extracting a corresponding order coefficient based on the order accuracy and the order coefficient information and the accuracy zone; means for calculating a net order quantity by multiplying the order coefficient of the order information by the order coefficient; Means for detecting order information whose order accuracy is lower than the order accuracy defined in the accuracy zone, or order information for which the order accuracy should be ranked higher, and the order accuracy of the order information is defined in the accuracy zone. Means for alerting when order information lower than the received order information or order information for which the order accuracy is to be ranked higher is provided.