How To Fix EM457 - Multiple use of &1 &2 within the activity group

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 457

• Message text: Multiple use of &1 &2 within the activity group

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 EM457 - Multiple use of &1 &2 within the activity group ?

  The SAP error message EM457 "Multiple use of &1 &2 within the activity group" typically occurs in the context of activity groups in SAP, particularly when defining or managing activity types and their assignments. This error indicates that there is a duplication of an activity type or a resource within the same activity group, which is not allowed.
  Cause:
  The error is caused by:
  
  Duplicate Entries: You have assigned the same activity type or resource more than once within the same activity group.
  Configuration Issues: There may be a misconfiguration in the activity group settings or definitions.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Activity Group Configuration:
  
  Go to the transaction code related to activity groups (e.g., KP26 for activity type planning).
  Review the entries in the activity group to identify any duplicates.
  
  
  
  Remove Duplicates:
  
  If you find that the same activity type or resource is listed multiple times, remove the duplicate entries.
  Ensure that each activity type or resource is only assigned once within the activity group.
  
  
  
  Validate Changes:
  
  After making changes, save your configuration and try to execute the transaction again to see if the error persists.
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration, refer to SAP documentation or help resources for guidance on setting up activity groups correctly.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to make changes to activity groups, as lack of permissions can sometimes lead to unexpected behavior.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KP26 (Activity Type Planning), KP06 (Cost Center Planning), and KSU5 (Actual Activity Allocation).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to resolve the EM457 error and ensure that your activity groups are configured correctly without duplicates.