| Warehouse supply structures |  |
| Before you can start to use direct material supply (DMS), you must define at least one warehouse supply structure. Defining warehouse supply structures To set up a warehouse supply structure, take the following steps: In the Warehouse Supply Structures (whinh6140m000) session, enter a new code and an appropriate description. On the appropriate menu, click Supply Relationships. In the Warehouse Supply Structure Relationships (whinh6141m000) session, add relationships, as required. Example To create the following supply structure...
Warehouse Supply Structure STRUCT1
Supply Warehouse | Destination Warehouse | Allow Supply from Receipt | Allow Supply from SFC Receipt | Allow Supply from Inventory
A | B, B1, B2, E | Yes | Yes | Yes
A | C, C1, C2 | Yes | No | Yes
B | B1, B2 | Yes | Yes | No
C | C1, C2 | No | No | Yes
E | E1, E2 | Yes | Yes | No
...you must define the following one-to-one relationships:
Warehouse Supply Structure STRUCT1
Supply Warehouse | Destination Warehouse | Allow Supply from Receipt | Allow Supply from SFC Receipt | Allow Supply from Inventory
A | B | Yes | Yes | Yes
A | B1 | Yes | Yes | Yes
A | B2 | Yes | Yes | Yes
A | E | Yes | Yes | Yes
A | C | Yes | No | Yes
A | C1 | Yes | No | Yes
A | C2 | Yes | No | Yes
B | B1 | Yes | Yes | No
B | B2 | Yes | Yes | No
C | C1 | No | No | Yes
C | C2 | No | No | Yes
E | E1 | Yes | Yes | No
E | E2 | Yes | Yes | No
To define a relationship between a single warehouse and all other warehouses, leave the opposite warehouse type field empty. In the following example, supply from inventory is permitted for supply warehouse A to all other destination warehouses:
Warehouse Supply Structure STRUCT1
Supply Warehouse | Destination Warehouse | Allow Supply from Receipt | Allow Supply from SFC Receipt | Allow Supply from Inventory
A |  | No | No | Yes
Important! After you define a supply structure, you must specify the structure in the corresponding field on the Miscellaneous tab of the User Profiles (whwmd1540m000) session. Otherwise, you cannot use DMS. Using warehouse supply structures Warehouse supply structure relationships are taken into account when DMS planning is carried out. If you start DMS planning for a specific warehouse-item combination, ERP LN checks which supply relationships apply to the current process. For each applicable supply relationship, the warehouse supply structure is consulted to check for which destination warehouses demand should be considered. For the previous example, this means that after a receipt confirmation of an SFC order in warehouse A, demand in warehouses B, B1, B2 and E is taken into account. Note Only demand from DMS-supplied warehouses in the same warehouse supply cluster is taken into account. This includes demand directly on the supply warehouse. To determine whether a destination warehouse can be supplied, ERP LN performs the following steps: If, in the Inventory Handling Parameters (whinh0100m000) session, the Use Warehouse Supply Structures check box is cleared, no restrictions on supply relationships exist and all supply relationships are permitted. ERP LN performs no further checks. If the Use Warehouse Supply Structures check box is selected, the user profile for the current user is retrieved. If no user profile exists or if the supply structure is empty for the user, the user is not authorized to run DMS and, consequently, the destination warehouse cannot be supplied. If the user is authorized to run DMS for a supply structure, the relationship for the supply warehouse and the destination warehouses is searched in the warehouse supply structure relationships. If such a relationship applies (current date is between Effective Date and Expiry Date ), this relationship is used to determine whether the destination warehouse can be supplied. If, in the supply structure, no relationship exists for the supply warehouse and the destination warehouse, or if that relationship no longer applies, a relationship for the supply warehouse and an empty destination warehouse is searched. If this type of relationship applies (current date is between Effective Date and Expiry Date ), this relationship is used to determine whether the destination warehouse can be supplied. If, in the supply structure, no relationship exists for the supply warehouse and an empty destination warehouse, or if that relationship no longer applies, a relationship for an empty supply warehouse and an empty destination warehouse is searched. If this type of relationship appliies (current date is between Effective Date and Expiry Date ), this relationship is used to determine whether the destination warehouse can be supplied. If no (effective) relationship is found, the destination warehouse cannot be supplied. Related topics Direct material supply (DMS) Supply location and demand location |