How To Fix WC128 - Material group &2 is not assigned to store &1

SAP Error Message - Details

• Message type: E = Error

• Message class: WC - POS interface - outbound and Tickets & Additionals

• Message number: 128

• Message text: Material group &2 is not assigned to store &1

What causes this issue?

Store &V1& has not been assigned material group &V2&.

System Response

The record could not be prepared for material &V3& in POS - interface
outbound processing.

How to fix this error?

<DS:SIMG.W_OE_EG_WL_0225.SIMG_OWER>Maintain the assignment via plant
maintenance.</>
After displaying plant data, choose the 'Material groups' pushbutton.
If the error occurs on initialization, you must <DS:TRAN.WPMI>re-start
POS outbound</>.
If the error occurs in change mode, you do not have to take any further
action, as the data will be retransmitted next time.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WC128 - Material group &2 is not assigned to store &1 ?

  The SAP error message WC128 "Material group &2 is not assigned to store &1" typically occurs in the context of inventory management or material management when a specific material group is not linked to a particular store or location in the system. This can prevent transactions related to that material group from being processed for the specified store.
  Cause:
  
  Missing Assignment: The material group has not been assigned to the store in the configuration settings.
  Incorrect Configuration: There may be an error in the configuration of the material group or store settings.
  Data Entry Error: The material group or store may have been incorrectly entered or referenced in the transaction.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Material Group Assignment:
  
  Go to the configuration settings in SAP (usually through transaction codes like SPRO).
  Navigate to the relevant section for material management and check if the material group is assigned to the store.
  If it is not assigned, you will need to create the assignment.
  
  
  
  Assign Material Group to Store:
  
  Use transaction code OMD1 (or the relevant transaction for your version of SAP) to assign the material group to the store.
  Ensure that the material group is correctly linked to the store in the system.
  
  
  
  Verify Data Entry:
  
  Double-check the material group and store codes in the transaction you are trying to execute.
  Ensure that there are no typos or incorrect references.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or guidelines for your organization regarding material group and store assignments.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above steps, consider reaching out to your SAP support team or consulting SAP notes for any known issues related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to material management, such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material).
  Material Group Configuration: Understanding how material groups are configured in SAP can help prevent similar issues in the future.
  User Roles and Authorizations: Ensure that you have the necessary permissions to make changes to material group assignments.
  
  By following these steps, you should be able to resolve the WC128 error and ensure that the material group is properly assigned to the store in your SAP system.