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

SAP Error Message - Details

• 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

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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, you can modify the existing MRP area instead of trying to create a new one.
  If the existing MRP area is no longer needed, you can delete it, provided that it is not being used in any active planning processes.
  
  
  
  Review Configuration:
  
  Ensure that your configuration settings for MRP areas are correct and that you are not inadvertently trying to create duplicates.
  Check if there are any transport requests or changes that might have led to inconsistencies in the MRP area definitions.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed information on MRP area management and best practices.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  
  
  Related Information:
  
  MRP Areas: MRP areas are used in SAP APO to define specific areas within a plant or storage location for planning purposes. They allow for more granular control over inventory and production planning.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/LOM1 (for MRP area maintenance) and /SAPAPO/LOM2 (for displaying MRP areas).
  SAP Notes: Check for any SAP Notes related to MRP area management that might provide additional insights or solutions to known issues.
  
  By following these steps, you should be able to address the error message and manage MRP areas effectively in your SAP APO system.