How To Fix RMDIAG018 - Error in the unique assignment to I73xxxx:

SAP Error Message - Details

• Message type: E = Error

• Message class: RMDIAG - RM: Messages from Diagnosis Programs

• Message number: 018

• Message text: Error in the unique assignment to I73xxxx:

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 RMDIAG018 - Error in the unique assignment to I73xxxx: ?

  The SAP error message RMDIAG018 typically indicates an issue with the unique assignment of a specific identifier (in this case, I73xxxx) within the SAP system. This error often arises in the context of data management, particularly when dealing with master data or transactional data that requires unique identifiers.
  Cause:
  
  Duplicate Entries: The most common cause of this error is the presence of duplicate entries in the database for the specified identifier. This can happen if data was imported or created incorrectly.
  Configuration Issues: There may be configuration settings that are not aligned with the expected unique constraints for the identifier.
  Data Migration Issues: If data was migrated from another system, it may not have adhered to the unique constraints required by SAP.
  Custom Development: Custom programs or enhancements may inadvertently create duplicates or fail to enforce uniqueness.
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to query the relevant database table and identify any duplicate entries for the identifier in question.
  Data Cleanup: Once duplicates are identified, you will need to decide how to handle them. This may involve deleting or merging records, depending on your business requirements.
  Check Configuration: Review the configuration settings related to the identifier to ensure that they are set up correctly to enforce uniqueness.
  Review Data Migration Processes: If the issue arose after a data migration, review the migration process to ensure that it correctly handles unique constraints.
  Custom Code Review: If there are custom developments involved, review the code to ensure that it properly checks for existing entries before creating new ones.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE16 (Data Browser), SE11 (Data Dictionary), and SE80 (Object Navigator) for data analysis and debugging.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Documentation: Review SAP documentation related to the specific module or area where the error is occurring, as it may provide insights into unique constraints and data management practices.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific system configuration and business processes.