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Objective


The purpose of this blog is to give you some insights about the required configuration and manual steps if you change the ERP system connected to EWM.

Business Case


If you use a Decentralized EWM system, the database should be connected to an ERP system. It can be an SAP or non-SAP system.

Recently, I worked on a migration project. We changed the ERP system from SAP PXX to SAP PYY.

I mentioned below the required configuration points and manual steps for this case.

 

/!\ There are some Basis setup like the queues which should be done. I will mention only the functional settings.

 

EWM Configuration



  • Create new BSG


Table /SAPAPO/V_SYSLST

You define a new BSG for the new ERP system PYY




  • Assign logical system to BSG


Table /SAPAPO/V_BSGSET

Assign the ERP and EWM systems to the new BSG




  • Update recipient depedent control of processes


Table /SCWM/TCTRLPROCS




  • Update the warehouse number mapping


Table /SCWM/TMAPWHNUM




  • Update route mapping


Table /SCWM/TMAPROUTE




  • Update storage location mapping


/SCWM/V_TMAPSTLO




  • Delivery mapping


SPRO > Extended Warehouse Management > Interfaces > ERP Integration > Delivery Processing

Check and update the delivery mapping if you are using the ERP system as an entry


For us, the ERP system is defined for the delivery types and item mapping




  • Production mapping


SPRO > Extended Warehouse Management > Interfaces > ERP Integration > Production

Check and update the production mapping if you are using the ERP system as an entry




  • Transportation mapping


SPRO > Extended Warehouse Management > Interfaces > ERP Integration > Transportation

Check and update the transportation mapping if you are using the ERP system as an entry


 

ERP configuration



  • Setup distribution model


T-code = /SPE/OL19

Run the distribution model generation for each ERP warehouse number


 

EWM Manual steps



  • Mass update BP


In the ship-to tables, the system stores the source ERP system.

Field = Responsible institution --> It should be updated by the new ERP system


Transaction MASS


 

 

 

 

 

 

 

 

 

 

Run it for all BP




  • Partner profile


Transaction WE20

Define the inbound and outbound Idocs for the new ERP system

You have to create also the new receiving port




  • Mass change BSG for products and locations


As for the BP, the BSG is stored in products (/sapapo/matmap) and location table (/sapapo/locmap)

You have to replace it by the new BSG. For this, there is a program which can be used to mass update it.

You have to implement it by the OSS note 213109

Program = Z_CHANGE_LOGQS



ERP Manual steps



  • Partner profile


Transaction WE20

Create the EWM partner profile in the new ERP system



Batch class and characteristics


We have the class and char numbers in EWM and ERP.

In EWM, the system stores the class and char number coming from the ERP (like the BSG for products and BP).

--> We have to

  1. CIF the class and char

  2. Update the class and char in EWM table with the new class and numbers of the new ERP system

  3. Check the EWM class table

  4. Check the char EWM table

  5. Initial CIF of batches



  • CIF the class and char


Transaction CFM1 and CFM2




  • Update the EWM class and char table


Program /SAPAPO/CHECK_INCON_TCL_CL_CHR


/!\ Normally this program should update the class and char EWM tables. However, when we used it, it updated only the class table.




  • Check EWM class table


EWM class table = TCL_CLINT_IDENT

ERP class table = KLAH

KLAH-CLINT should be equal to  TCL_CLINT_IDENT-CLINT

  • Check EWM char table


EWM char table = TCL_ATINN_IDENT

ERP class table = CABN

CABN-CLINT should be equal to  TCL_ATINN_IDENT-CLINT

/!\ In our case, I updated the table TCL_ATINN_IDENT manually via SE16 in debug mode.

  • Initial CIF of batches


SAP recommended to run the program RIMODINI for the first CIF of batches


 

Conclusion


I hope this can help other consultant in case they are working on such project.

Don’t hesitate to comment this blog.

 

Cheers

Foued B.
Follow the SAP Extended Warehouse Management environment Topic page (https://community.sap.com/topics/extended-warehouse-management),

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