How To Fix RSDHA008 - Mapping not possible. Field is already mapped.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDHA - HANA Analysis in BW

• Message number: 008

• Message text: Mapping not possible. Field is already mapped.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDHA008 - Mapping not possible. Field is already mapped. ?

  The SAP error message RSDHA008 ("Mapping not possible. Field is already mapped.") typically occurs in the context of SAP BW (Business Warehouse) when you are trying to map fields in a DataSource or InfoObject, and the field you are attempting to map is already associated with another field.
  Cause:
  
  Field Already Mapped: The primary cause of this error is that the field you are trying to map is already mapped to another field in the same DataSource or InfoObject. SAP BW does not allow multiple mappings for the same field.
  Incorrect Configuration: There may be a configuration issue where the mapping is not set up correctly, leading to conflicts.
  DataSource Changes: If changes were made to the DataSource or InfoObject after initial mappings were created, it could lead to this error.
  
  Solution:
  
  
  Check Existing Mappings:
  
  Go to the DataSource or InfoObject in question and review the existing mappings. Identify if the field you are trying to map is already mapped to another field.
  If it is, you will need to decide whether to keep the existing mapping or remove it before proceeding with your new mapping.
  
  
  
  Remove or Change Mapping:
  
  If you find that the field is already mapped and you want to change it, you can remove the existing mapping and then create the new mapping.
  Ensure that you are not violating any business rules or data integrity requirements by changing the mapping.
  
  
  
  Recreate the DataSource:
  
  In some cases, if the mappings are too complex or if there are many conflicts, it might be easier to recreate the DataSource or InfoObject from scratch, ensuring that you set up the mappings correctly from the beginning.
  
  
  
  Check for Transport Issues:
  
  If this error occurs after a transport, ensure that all objects related to the DataSource or InfoObject have been transported correctly and that there are no inconsistencies.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of SAP BW you are using, as there may be version-specific considerations or known issues.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) to manage DataSources and InfoObjects.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and their solutions.
  
  By following these steps, you should be able to resolve the RSDHA008 error and successfully map your fields in SAP BW.