How To Fix /ACCGO/UIS_MSG180 - External ID cannot be same for two headers

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/UIS_MSG -

• Message number: 180

• Message text: External ID cannot be same for two headers

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/UIS_MSG180 - External ID cannot be same for two headers ?

  The SAP error message /ACCGO/UIS_MSG180 indicates that there is a conflict with the External ID being used in the system. Specifically, it means that the External ID you are trying to assign is already in use for another header in the same context, which is not allowed.
  Cause:
  
  Duplicate External ID: The most common cause of this error is that the External ID you are trying to use has already been assigned to another document or header in the system.
  Data Entry Error: There may have been a mistake in data entry where the same External ID was inadvertently used for multiple entries.
  System Configuration: In some cases, the system configuration may enforce unique constraints on External IDs, leading to this error when duplicates are detected.
  
  Solution:
  
  Check Existing Entries: Review the existing headers or documents in the system to identify where the conflicting External ID is being used. You can do this by querying the relevant tables or using transaction codes that allow you to view the headers.
  Use a Unique External ID: If you find that the External ID is already in use, you will need to generate a new, unique External ID for the header you are trying to create or modify.
  Correct Data Entry: If the error was due to a data entry mistake, correct the External ID in the relevant document or header to ensure it is unique.
  Consult Documentation: If you are unsure about the rules regarding External IDs in your specific SAP implementation, consult the relevant documentation or reach out to your SAP support team for guidance.
  
  Related Information:
  
  Transaction Codes: Depending on your SAP version and configuration, you may use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to check the relevant tables for existing External IDs.
  Custom Development: If your organization has custom developments or enhancements related to External IDs, ensure that these are reviewed as they may affect how External IDs are managed.
  SAP Notes: Check for any relevant SAP Notes that may address this issue or provide additional context on handling External IDs in your specific version of SAP.
  
  By following these steps, you should be able to resolve the error and ensure that your External IDs are unique as required by the system.