How To Fix RS_HCPR_MODEL015 - Temporal join: No Union allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 015

• Message text: Temporal join: No Union allowed

What causes this issue?

The HANA CompositeProvider contains a UNION node and at least one JOIN
node. At least one joined PartProvider is time-dependent too.
If there are time-dependent PartProviders in a JOIN node<(>,<)> it is
not possible to have a UNION node as well.
Time-dependent joins are only possible in a join-only scenario, not in a
mixed scenario.

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?

Delete the UNION node
Switch off the time-dependency of all joined time-dependent
PartProviders (ScenarioTab, SourceTree)
InfoObjects: Hide time-dependent fields
Advanced/classic DataStore Objects, InfoCubes: Remove time-dependency

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_MODEL015 - Temporal join: No Union allowed ?

  The SAP error message RS_HCPR_MODEL015 with the description "Temporal join: No Union allowed" typically occurs in the context of SAP HANA or SAP BW when working with data models that involve temporal joins. This error indicates that there is an issue with the way the data model is structured, specifically regarding the use of unions in conjunction with temporal joins.
  Cause:
  The error arises when you attempt to use a union operation in a data model that also includes a temporal join. Temporal joins are used to combine data based on time-related conditions, and they have specific requirements and limitations. In this case, the system does not allow unions to be used in conjunction with temporal joins, which leads to the error message.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Review the Data Model: Check the structure of your data model to identify where the union is being applied. Ensure that you are not trying to combine datasets using a union when a temporal join is also involved.
  
  
  Separate Queries: If you need to perform both a union and a temporal join, consider separating the operations into different queries or data flows. You can first perform the temporal join and then apply the union on the results of that join if necessary.
  
  
  Adjust the Logic: Re-evaluate the logic of your data model. If the union is essential, you may need to redesign the model to avoid the conflict with the temporal join. This might involve restructuring how data is combined or how time-based conditions are applied.
  
  
  Consult Documentation: Refer to the SAP documentation for guidance on temporal joins and unions. Understanding the limitations and best practices can help you design your data model more effectively.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with a colleague who has experience with SAP HANA or BW data modeling.
  
  
  Related Information:
  
  Temporal Joins: These are used to join tables based on time dimensions, allowing you to analyze data as it changes over time.
  Unions: A union operation combines the results of two or more queries into a single result set, but it must be used carefully in the context of temporal data.
  SAP HANA Documentation: For more detailed information on data modeling, temporal joins, and unions, refer to the official SAP HANA documentation or the SAP Help Portal.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution that allows you to work with your data model effectively.