How To Fix WY121 - Partner schema & not allowed for supplier master

WY121 - Overview

• Message type: E = Error

• Message class: WY - Supplier Master

• Message number: 121

• Message text: Partner schema & not allowed for supplier master

What causes this issue?

You want to use partner schema which has already been created for
another area (e.g. document, customer master).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Please choose a different partner schema. Use the Possible entries
button to display the possible entries.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WY121 - Partner schema & not allowed for supplier master ?

  SAP Error Message:
  WY121 - Partner schema & not allowed for supplier master
  
  
  Cause:
  This error occurs when you try to assign or use a partner schema that is not allowed or not defined for the supplier master data in the system. Partner schemas control which partner functions (like contact person, ordering address, invoicing party, etc.) are valid and how they are processed in master data or transactions.
  In this case, the partner schema you are trying to use is either:
  
  Not assigned to the supplier master data,
  Not maintained in the system for vendor master,
  Or the partner function within the schema is not valid for suppliers.
  
  
  Explanation:
  
  Partner schemas are used in SAP to define partner functions and their relationships in master data and documents.
  For vendor (supplier) master data, only certain partner schemas are allowed.
  If you try to assign or use a partner schema that is meant for customers or other business partners, or one that is