How To Fix RS_HCPR_MODEL129 - CompositeProvider '&1' not valid as left join partner (see details)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 129

• Message text: CompositeProvider '&1' not valid as left join partner (see details)

What causes this issue?

If you use a CompositeProvider as left join partner, then all
PartProviders of this CompositeProvider need to have a column view.
This is not the case for PartProvider &V2&.

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

System Response

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_MODEL129 - CompositeProvider '&1' not valid as left join partner (see details) ?

  The SAP error message RS_HCPR_MODEL129 indicates that there is an issue with the configuration of a CompositeProvider in SAP BW/4HANA or SAP BW on HANA. Specifically, it suggests that the CompositeProvider you are trying to use as a left join partner is not valid for that purpose. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  
  Incompatible Data Sources: The CompositeProvider may be trying to join data sources that are not compatible with a left join. This can happen if the data sources have different characteristics or if one of them is not suitable for the join type specified.
  
  
  Join Conditions: The join conditions defined in the CompositeProvider may not be correctly set up, leading to the error when trying to execute the left join.
  
  
  Data Model Issues: There may be issues with the underlying data model, such as missing keys or incorrect data types that prevent the CompositeProvider from functioning as expected.
  
  
  CompositeProvider Configuration: The CompositeProvider itself may not be configured correctly, or it may not have the necessary properties set to allow it to be used in a left join.
  
  
  Solutions
  
  
  Check Data Source Compatibility: Ensure that the data sources you are trying to join are compatible with a left join. Review the characteristics of each data source and confirm that they can be joined in the manner you are attempting.
  
  
  Review Join Conditions: Go through the join conditions defined in the CompositeProvider. Make sure that the keys used for the join are correctly defined and that they exist in both data sources.
  
  
  Validate Data Model: Check the underlying data model for any inconsistencies. Ensure that the keys used for joining are present and correctly defined in both data sources.
  
  
  Adjust CompositeProvider Settings: Review the settings of the CompositeProvider. Make sure that it is configured to allow left joins and that all necessary properties are set correctly.
  
  
  Test with Different Join Types: If possible, try using different join types (e.g., inner join) to see if the issue persists. This can help identify if the problem is specific to left joins.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on CompositeProviders and join configurations. This can provide insights into best practices and common pitfalls.
  
  
  Related Information
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  BW Modeling Tools: Utilize the BW Modeling Tools in SAP HANA Studio or Eclipse to visually inspect and modify the CompositeProvider configuration.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.