How To Fix MW412 - &1 &2: Supplier &3 and plant &4 are identical

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 412

• Message text: &1 &2: Supplier &3 and plant &4 are identical

What causes this issue?

The receiving plant and the source of supply are the same.

System Response

The allocation table cannot be saved.

How to fix this error?

Please maintain a different vendor as the source of supply.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW412 - &1 &2: Supplier &3 and plant &4 are identical ?

  The SAP error message MW412 indicates that there is an issue with the supplier and plant being identical in a material document or transaction. This typically occurs when you are trying to create or process a material document (like a goods receipt or transfer posting) where the supplier and the plant are the same, which is not allowed in SAP.
  Cause:
  The error arises when:
  
  You are trying to post a transaction that involves a supplier and a plant that are the same entity. For example, if you are trying to receive goods from a supplier into the same plant that the supplier is associated with, SAP will throw this error.
  This can happen due to incorrect master data setup or during the processing of a transaction where the supplier and plant are incorrectly linked.
  
  Solution:
  To resolve the MW412 error, you can take the following steps:
  
  
  Check Master Data:
  
  Verify the vendor (supplier) master data and ensure that the supplier is not set up as the same entity as the plant in question.
  Check the purchasing info records and ensure that the supplier is correctly assigned to the appropriate plant.
  
  
  
  Correct Transaction:
  
  If you are trying to post a goods receipt or any other transaction, ensure that you are using the correct supplier and plant combination.
  If the transaction is valid, consider using a different supplier or plant that does not trigger this error.
  
  
  
  Review Configuration:
  
  If this error occurs frequently, review the configuration settings in the SAP system related to purchasing and inventory management to ensure that they align with your business processes.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed information on the error and its implications.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may encounter this error while using transaction codes like MIGO (Goods Movement), ME21N (Create Purchase Order), or ME22N (Change Purchase Order).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  User Exits or BAdIs: In some cases, custom logic implemented through user exits or BAdIs may need to be reviewed if they are affecting the behavior of supplier and plant assignments.
  
  By following these steps, you should be able to identify the root cause of the MW412 error and implement a suitable solution.