How To Fix /SAPAPO/AHT456 - The ext. name &1 has been used several times (parameter TABLEOFEVENTS2)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/AHT -

• Message number: 456

• Message text: The ext. name &1 has been used several times (parameter TABLEOFEVENTS2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/AHT456 - The ext. name &1 has been used several times (parameter TABLEOFEVENTS2) ?

  The SAP error message /SAPAPO/AHT456 indicates that there is a problem with the external name specified in the context of the Advanced Planning and Optimization (APO) module, specifically related to the parameter TABLEOFEVENTS2. This error typically arises when the same external name is used multiple times in a configuration or setup where unique names are required.
  Cause:
  The error is caused by the following:
  
  The external name specified in the configuration for TABLEOFEVENTS2 has been defined more than once. This could happen if you are trying to register multiple events or data sources with the same name, which is not allowed.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Duplicate Names:
  
  Check the configuration where TABLEOFEVENTS2 is defined. Look for any entries that have the same external name.
  You can do this by navigating to the relevant transaction or configuration area in SAP APO where these external names are set.
  
  
  
  Modify External Names:
  
  Change the duplicate external names to ensure that each entry has a unique name. This may involve renaming one or more of the entries to avoid conflicts.
  
  
  
  Validate Configuration:
  
  After making changes, validate the configuration to ensure that there are no more duplicate names and that the setup is correct.
  
  
  
  Test the Changes:
  
  Once you have made the necessary changes, test the functionality to ensure that the error no longer occurs and that the system behaves as expected.
  
  
  
  Documentation:
  
  Document the changes made for future reference and to assist other team members who may encounter similar issues.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on your specific setup, you may need to use transaction codes like /SAPAPO/SDP94 (for planning book configuration) or /SAPAPO/OM (for order management) to access the relevant settings.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions related to this error message.
  SAP Community: Consider searching or posting in the SAP Community forums for additional help from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error message /SAPAPO/AHT456 and ensure that your APO configuration is set up correctly.