How To Fix RS_HCPR_MODEL085 - Source '&1' not allowed in union '&2'

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 085

• Message text: Source '&1' not allowed in union '&2'

What causes this issue?

Runtime restriction: All inputs of a union have to be basis providers.
Object '&SYST-MSGV1&' is not a basis provider for union '&SYST-MSGV2&'.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RS_HCPR_MODEL085 - Source '&1' not allowed in union '&2' ?

  The SAP error message RS_HCPR_MODEL085 indicates that there is an issue with a union operation in a query or data model where a specific source is not allowed. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when working with data models, queries, or transformations.
  Cause:
  The error message "Source '&1' not allowed in union '&2'" suggests that the data source you are trying to use in a union operation is not compatible or not permitted. This can happen due to several reasons:
  
  Incompatible Data Sources: The sources being combined in the union may have different structures, data types, or characteristics that prevent them from being unioned together.
  Configuration Issues: The data source may not be properly configured or may not be included in the union definition.
  Authorization Issues: There may be restrictions on the data source that prevent it from being used in a union operation.
  Modeling Errors: There could be errors in the data model or query definition that lead to this issue.
  
  Solution:
  To resolve the RS_HCPR_MODEL085 error, you can take the following steps:
  
  
  Check Data Source Compatibility:
  
  Ensure that the data sources you are trying to union have the same structure (i.e., the same number of fields and compatible data types).
  Review the fields in each data source to confirm they match.
  
  
  
  Review Union Definition:
  
  Go to the union definition in your data model or query and verify that the sources included are correctly configured.
  Make sure that the sources are intended to be used together in a union.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to access the data sources involved in the union.
  Consult with your SAP security team if you suspect authorization issues.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific error message for any additional guidance or known issues.
  
  
  
  Test with Simplified Queries:
  
  Create a simplified version of the query or model to isolate the issue. Start with one data source and gradually add others to identify which one is causing the problem.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with the error message and context for better troubleshooting.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Documentation: Review the SAP BW or SAP HANA documentation for best practices on data modeling and query design.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.