How To Fix RS_HCPR_MODEL078 - More than one assignment exists to target field '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_HCPR_MODEL - Messages related to the HANA Composite Provider Backend

• Message number: 078

• Message text: More than one assignment exists to target field '&1'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS_HCPR_MODEL078 - More than one assignment exists to target field '&1' ?

  The SAP error message RS_HCPR_MODEL078 indicates that there is an issue with the data model in SAP BW (Business Warehouse) or SAP HANA, specifically related to the assignment of fields in a data flow or transformation. The message states that there is more than one assignment to a target field, which can lead to ambiguity in data processing.
  Cause:
  The error typically arises when:
  
  Multiple Source Fields: More than one source field is mapped to the same target field in a transformation or data flow. This can happen if the data model is not designed correctly or if changes were made without updating the mappings.
  Incorrect Mapping: During the design of the data model, the mappings between source and target fields may have been incorrectly defined, leading to conflicts.
  Data Model Changes: If the data model has been modified (e.g., adding new fields or changing existing ones) without properly updating the mappings, it can result in this error.
  
  Solution:
  To resolve the RS_HCPR_MODEL078 error, you can follow these steps:
  
  
  Check Transformations: Go to the transformation that is causing the error and review the mappings. Ensure that each target field has a unique source field assigned to it.
  
  
  Remove Duplicate Assignments: If you find that multiple source fields are mapped to the same target field, decide which source field should be used and remove the others.
  
  
  Validate Data Model: After making changes, validate the data model to ensure that there are no other conflicts or issues.
  
  
  Test the Data Flow: Once the mappings are corrected, test the data flow to ensure that the error is resolved and that data is being processed correctly.
  
  
  Documentation: Document any changes made to the mappings for future reference and to help prevent similar issues.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message. SAP frequently updates its documentation and may have specific recommendations for your version.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP BW or HANA to avoid similar issues in the future.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to resolve the RS_HCPR_MODEL078 error and ensure that your data model functions correctly.