ATP settings when setting up production supply with a separate PSA storage location in EWM

[schulte-bahrenberg]

Hi Community,

I am looking for somebody who has successfully setup a PMR-based production supply process in EWM where the components are picked from storage location A (call it AFS from here onwards) and on the PSA a posting change to storage location B is executed (call it PSWM from here onwards).

The steps of the staging process are pure standard:

- Production order is created and released

- Reservations in ERP are created for storage location AFS (this is given on item level of the components)

- PMR is created automatically in EWM

- WTs against the PMR are created and confirmed to the PSAs

- Upon confirmation a posting change in EWM is executed from F2>P2 (triggers the creation of a 411 movement in ERP)

Some time later in the future the components are consumed from the PSA and the reservation is cleared in ERP. My problem is the time window between the completion of the staging process and the consumption of the components (confirmation of the order). In this time window I do have a reservation in ERP on storage location AFS but the stock is already posted to PSWM. This crashes our availability check as the reservation blocks stock on AFS (which is actually available) and the stock on PSWM is available although it should be reserved.

How is this to be solved based on best-practice (the 2-storage-location setup is suggested by SAP so there should be a solution in standard). How do you configure your ATP check on order to consider the reservation on storage location AFS before staging and consider it on PSWM in between staging and consumption/confirmation?

Thanks a lot in advance for everybody who shares his/her experiences here! (especially hoping shailesh.mishra5 could know the answer here ;-))

[former_member788724 · Accepted solution]

Hello

Below process

Warehouse storage location = AFS

PSA Storage location = PSWM

CC created for storage location PSWM as source

ATP check shall work at plant level .

AFS stock is picked and posted to PSWM when WT is confirmed to production storage type.

Backflush done from PSWM .

Why do you need reservation for AFS? it should be for PSWM , as backflush will be done later from PSWM only.

All will work in SAP standard.

You may check below two blogs

https://answers.sap.com/questions/12862609/production-material-staging-with-method-5.html

https://answers.sap.com/questions/13339217/how-to-use-2-ewm-storage-locations-for-production.html

[schulte-bahrenberg]

Thanks Aslam for your feedback. I think there is no way to work with the AFS sloc in the CC. The production storage location needs to be in the CC respectively reservation in order to make this process work in a clean way.