How To Fix /SAPAPO/LOM163 - MRP area &1 (plant &2, storage location &3) already exists

/SAPAPO/LOM163 - Overview

• Message type: E = Error

• Message class: /SAPAPO/LOM -

• Message number: 163

• Message text: MRP area &1 (plant &2, storage location &3) already exists

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/LOM163 - MRP area &1 (plant &2, storage location &3) already exists ?

  The SAP error message /SAPAPO/LOM163 indicates that there is an attempt to create or modify a Material Requirements Planning (MRP) area in SAP Advanced Planning and Optimization (APO) that already exists for the specified plant and storage location. This error typically arises during the configuration of MRP areas in the APO system.
  
  Cause:
  The error occurs because:
  
  An MRP area with the same plant and storage location combination already exists in the system.
  There may have been an attempt to create a duplicate entry, which is not allowed in the system.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing MRP Areas:
  
  Navigate to the relevant transaction in SAP APO (e.g., /SAPAPO/LOM1 for MRP area maintenance).
  Search for the existing MRP area using the plant and storage location specified in the error message.
  Verify if the MRP area already exists.
  
  
  
  Modify or Delete Existing MRP Area:
  
  If the MRP area already exists and you need to make changes,