How To Fix CA_TTE198 - External Mapping of Product ID '&1' is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: CA_TTE - TTE Messages

• Message number: 198

• Message text: External Mapping of Product ID '&1' is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CA_TTE198 - External Mapping of Product ID '&1' is not unique ?

  The SAP error message CA_TTE198, which states "External Mapping of Product ID '&1' is not unique," typically occurs in the context of SAP's Product Lifecycle Management (PLM) or when dealing with external product IDs in the SAP system. This error indicates that there are multiple entries in the system that map to the same external product ID, which creates ambiguity for the system when trying to process or reference that product.
  Cause:
  
  Duplicate External IDs: The primary cause of this error is the existence of multiple records in the database that have the same external product ID. This can happen due to data entry errors, incorrect data imports, or system integrations that do not enforce uniqueness.
  Data Migration Issues: If data has been migrated from another system, it is possible that the external IDs were not unique in the source system, leading to duplicates in SAP.
  Configuration Issues: Sometimes, the configuration settings in SAP may not enforce uniqueness for external mappings, allowing duplicates to be created.
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to query the relevant database tables (e.g., MARA, MARC, or specific tables related to external mappings) to identify the records that have the same external product ID.
  Data Cleanup: Once duplicates are identified, you will need to decide how to handle them. This may involve:
  
  Deleting or archiving duplicate records.
  Merging records if they represent the same product but have different attributes.
  Correcting the external IDs to ensure uniqueness.
  
  
  Adjust Data Import Processes: If the duplicates were created through data imports or integrations, review and adjust the processes to ensure that they enforce uniqueness for external product IDs.
  Consult Documentation: Review SAP documentation or consult with SAP support for specific guidelines on handling external mappings and ensuring data integrity.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and others that can help you analyze the data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Data Governance: Implement data governance practices to prevent the creation of duplicate external IDs in the future. This may include setting up validation rules or using unique constraints in the database.
  
  By following these steps, you should be able to resolve the CA_TTE198 error and prevent it from occurring in the future.