How To Fix MW454 - The supplier for plant &1 is not the same as in the contract

MW454 - Overview

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 454

• Message text: The supplier for plant &1 is not the same as in the contract

What causes this issue?

Allocation table item was created referencing contract &V3&. Vendor
&V2& for plant &V1& is not the same as vendor &V4& with which the
contract was negotiated.

System Response

The allocation table item cannot be processed.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

MW454 - Details

• The SAP error message MW454 indicates that there is a mismatch between the supplier (vendor) assigned to a specific plant and the supplier specified in the contract. This error typically occurs during the procurement process when trying to create or process a purchase order or a related document.
  
  Cause:
  
  Vendor Mismatch: The vendor assigned to the plant in the material master or purchasing info record does not match the vendor specified in the contract.
  Contract Configuration: The contract may have been created with a different vendor than the one currently assigned to the plant for the material.
  Plant-Specific Settings: The plant settings in the vendor master may not align with the contract settings.
  Data Entry Errors: There may have been a mistake in entering the vendor information either in the contract or in the material master.
  
  
  Solution:
  
  
  Check Vendor Assignment:
  
  Go to the material master (transaction code MM03) and check the vendor assigned to the plant.
  Verify that the