How To Fix /SAPAPO/MAT365 - Table MATLWH already contains an entry with mat. &1 and plant &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MAT -

• Message number: 365

• Message text: Table MATLWH already contains an entry with mat. &1 and plant &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MAT365 - Table MATLWH already contains an entry with mat. &1 and plant &2 ?

  The SAP error message /SAPAPO/MAT365 indicates that there is an attempt to create or update a material in the table MATLWH (Material Warehouse) for a specific material and plant combination, but an entry with the same material and plant already exists. This typically occurs in the context of Advanced Planning and Optimization (APO) or when working with the SAP Supply Chain Management (SCM) module.
  Cause:
  
  
  Duplicate Entry: The most common cause of this error is that there is already an existing entry in the MATLWH table for the specified material (&1) and plant (&2). This can happen if:
  
  The material was previously created or imported into the system.
  There was an attempt to re-import or re-create the material without first checking for existing entries.
  
  
  
  Data Consistency Issues: Sometimes, inconsistencies in data due to failed transactions or incomplete data migrations can lead to this error.
  
  
  Incorrect Configuration: If the system is not configured correctly, it may lead to attempts to create duplicate entries.
  
  
  Solution:
  
  
  Check Existing Entries: 
  
  Use transaction codes like SE16 or SE11 to view the contents of the MATLWH table. Search for the material number and plant combination to confirm if an entry already exists.
  If an entry exists and is valid, you may not need to create a new one.
  
  
  
  Delete or Update Existing Entry: 
  
  If the existing entry is incorrect or needs to be updated, you can delete or modify it as necessary. Be cautious with deletions to avoid data integrity issues.
  Use transaction /SAPAPO/MAT1 to manage materials in APO.
  
  
  
  Review Data Import Processes: 
  
  If this error occurs during a data import process, review the import logic to ensure it checks for existing entries before attempting to create new ones.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to the specific version of your SAP system for any known issues or additional troubleshooting steps.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance, especially if it involves complex data integrity issues.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/MAT1 for material management in APO, SE16 for table viewing, and SE11 for data dictionary.
  SAP Notes: Check SAP Notes for any patches or updates related to this error message.
  Data Migration: If this error is occurring during a data migration process, ensure that the migration scripts are designed to handle existing data appropriately.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.