When using the advanced production integration, for each manufacturing order in ERP, the system creates a Production Material Request (PMR) directly in EWM, without any additional document in ERP. SAP ERP sends a message containing the required information from production when the manufacturing order is released and WM material staging is triggered. The WM material staging can be triggered automatically, or in the production order transaction, either by choosing Function → WM Material Staging → Execute, or by choosing the WM Material Staging button. If the manufacturing order is changed in ERP, the system updates the PMR for changes that are relevant for EWM, such as a changed quantity for staging.
Staging with Advanced Production Integration
This PMR contains the receiving product, and all the components from the manufacturing order in their required quantity.
The user can trigger the staging process manually, Staging for Production, and automatically or manually with the transaction, Schedule Staging for Production (/SCWM/STAGE). Schedule Staging for Production should be used for scheduling the staging run in the background, using a variant that contains the input parameters, such as warehouse, production staging area, and staging method. It is necessary to specify a time beyond which the system does not collect open staging requirements.
If the user decides which PMRs and which materials are to be staged, the Web Dynpro UI in the transaction Staging for Production enables the user to react to the stock situation in the PSA to stage more slowly when the production is delayed, or more quickly when production is ahead of time. This ensures that there is enough material when needed, but also that, if space in your production supply area (PSA) is limited, space is not blocked unnecessarily by products that are not required until later.
Staging Single Order versus Cross Order Items
Depending on the bin assignment settings, components are staged differently as follows:
- Single Order Staging
- The system creates a warehouse task to move the product to the PSA for each production material request (PMR) item. Each warehouse task has a reference to a single PMR. After the warehouse task is confirmed, the stock on the PSA has a reference to the PMR item, so the stock is reserved for the reference PMR item. Only this PMR can be used to consume the stock. You can manually release the reference to the PMR item for the stock.
- Cross-Order Staging
- The system accumulates products from more than one PMR and creates a warehouse task to move them to the PSA together. The warehouse tasks have no reference to the PMR item. After the warehouse task is confirmed, the stock has no reference to a PMR item. Each PMR that has an item with the product can be used to consume the stock. This is a flexible method, which allows you to stage products whether the product is required for one PMR in particular, or by several PMRs.
In the bin assignment, if you do not select to base the calculation on the PMRs, a minimum quantity or number of "containers" for the product on the PSA is maintained. If the quantity on the PSA, plus the quantity of any open warehouse tasks, is lower than the minimum quantity, the system creates a warehouse task to move the replenishment quantity of the product to the PSA.