How To Fix RSO_RES_HCPR044 - InfoProvider '&1' is not allowed for a UNION under a JOIN node

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_RES_HCPR - CompositeProvider

• Message number: 044

• Message text: InfoProvider '&1' is not allowed for a UNION under a JOIN node

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_RES_HCPR044 - InfoProvider '&1' is not allowed for a UNION under a JOIN node ?

  The SAP error message RSO_RES_HCPR044 indicates that there is an issue with the configuration of a query or a data model in SAP BW (Business Warehouse) or SAP HANA. Specifically, this error occurs when you attempt to use a UNION operation on InfoProviders that are not compatible under a JOIN node.
  Cause:
  The error typically arises due to the following reasons:
  
  
  Incompatible InfoProviders: The InfoProviders you are trying to combine using a UNION operation may not have the same structure or characteristics. For example, they might have different key figures, characteristics, or data types.
  
  
  Incorrect Query Design: The query design may not adhere to the rules for combining InfoProviders. In SAP BW, certain InfoProviders can only be used in specific contexts, and using them in a UNION under a JOIN node may violate these rules.
  
  
  Data Model Configuration: The underlying data model may not be set up correctly, leading to conflicts when trying to perform a UNION operation.
  
  
  Solution:
  To resolve the RSO_RES_HCPR044 error, you can take the following steps:
  
  
  Check InfoProvider Compatibility:
  
  Ensure that the InfoProviders you are trying to combine have the same structure. This includes having the same key figures and characteristics.
  If they are not compatible, consider redesigning your query or using a different approach to combine the data.
  
  
  
  Review Query Design:
  
  Go through the query design and ensure that you are using the correct nodes (JOIN vs. UNION).
  If you need to perform a UNION, make sure that you are not trying to do it under a JOIN node.
  
  
  
  Adjust Data Model:
  
  If necessary, modify the data model to ensure that the InfoProviders can be combined correctly.
  You may need to create a new InfoProvider that consolidates the data from the incompatible InfoProviders.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidelines on combining InfoProviders and the rules governing JOIN and UNION operations.
  
  
  
  Testing:
  
  After making changes, test the query again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP BW Documentation: Check the official SAP BW documentation for detailed information on InfoProviders, query design, and the rules for combining data.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  SAP Notes: Look for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.