How To Fix RS_B4H_PREPARE_APD057 - Full outer join is not supported in HCPR.

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_B4H_PREPARE_APD - Message class for APD transfer prepare package

• Message number: 057

• Message text: Full outer join is not supported in HCPR.

What causes this issue?

The join specified in APD node is defined as a full outer join. This
type of join is not supported in HCPR.

System Response

HCPR will be created as a left outer join.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RS_B4H_PREPARE_APD057 - Full outer join is not supported in HCPR. ?

  The error message "RS_B4H_PREPARE_APD057 Full outer join is not supported in HCPR" typically occurs in SAP BW (Business Warehouse) when using HANA Calculation Views or when working with HANA-based data models. This error indicates that a full outer join operation is being attempted, which is not supported in the context of HANA Calculation Views (HCPR stands for HANA Calculation Plan Runtime).
  Cause:
  
  Full Outer Join Usage: The primary cause of this error is the use of a full outer join in a query or data model that is being executed in an environment that does not support it. HANA Calculation Views do not support full outer joins, which can lead to this error.
  Data Model Design: The design of the data model may inadvertently include a full outer join, either through the use of a composite provider or a calculation view that combines multiple data sources.
  
  Solution:
  
  
  Change Join Type: Modify the data model to avoid using a full outer join. Instead, consider using:
  
  Left Outer Join: If you need all records from one table and matching records from another.
  Right Outer Join: If you need all records from the second table and matching records from the first.
  Inner Join: If you only need records that have matching entries in both tables.
  
  Analyze the requirements of your query to determine the most appropriate join type.
  
  
  Use Union Instead: If the intention behind the full outer join is to combine results from two datasets, consider using a union of two separate queries (one for each side of the join) instead of a full outer join.
  
  
  Review Calculation Views: If you are using calculation views, review the logic and ensure that you are not inadvertently creating a full outer join through the combination of multiple views or data sources.
  
  
  Check Composite Providers: If you are using composite providers, ensure that the underlying data sources do not include full outer joins.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes or Knowledge Base Articles (KBAs) that may provide additional context or updates regarding this error.
  Documentation: Review the SAP HANA documentation for details on supported join types and best practices for data modeling in HANA.
  Performance Considerations: Be aware that using complex joins can impact performance. Simplifying your data model can lead to better performance and easier maintenance.
  
  By addressing the join type and ensuring that your data model adheres to the supported operations in HANA, you should be able to resolve the error and successfully execute your queries.