How To Fix RSBK121 - If possible, do not use semantic grouping

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBK - Messages for the Data Transfer Process

• Message number: 121

• Message text: If possible, do not use semantic grouping

What causes this issue?

You can improve the performance for request processing without semantic
grouping.

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?

If you remove all field selections from the list of key fields in the
error stack on the <LS>Extraction</> tab page, the DTP uses a processing
type with better performance. The system either processes more steps in
parallel mode or continues processing the data using serial processing,
but creates several small data packages to reduce the load on the ABAP
runtime environment.
Make sure that the semantic grouping is not a prerequisite for one of
the DTP transformations before you decide not to build any semantic
groups.
<ZH>Note:</>
If at least one of the transformations requires the data packages to
contain semantically closed groups, do <ZH>not</> remove the selections.
Processing in parallel modes is also influenced by various other
factors, especially the <LS>Parallel Extraction</> field on the <LS>
Extraction</> tab of the DTP. If the system is supposed to use the
processing type <ZK>Parallel Extraction and Processing</> and the field
<LS>parallel extraction</> is <ZH>not</> selected for the DTP, then you
need to select the field again. For more information on the dependencies
between the field and the processing type, read the documentation about
the <DS:DE.RSBKPARALLELEXTR>Parallel Extraction</> field.
More information
Read the documentation under <ZK>Performance Tips for Data Transfer
Processes</> in the SAP library.

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 RSBK121 - If possible, do not use semantic grouping ?

  The SAP error message RSBK121 typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the data loading process, particularly when dealing with InfoProviders or data targets. Here’s a breakdown of the cause, solution, and related information for this error:
  Cause:
  
  Data Transfer Issues: The error may arise due to problems in the data transfer process, such as incorrect data formats or missing data.
  Data Source Configuration: There might be issues with the configuration of the data source or InfoPackage, such as incorrect settings or missing fields.
  Data Target Issues: The target InfoProvider may not be properly set up to receive the data, or it may be in a state that does not allow data loading (e.g., being in a "locked" state).
  Transformation Errors: If there are transformations defined for the data load, errors in these transformations can lead to this error message.
  Data Integrity Issues: There may be integrity issues with the data being loaded, such as duplicates or violations of data constraints.
  
  Solution:
  
  Check Data Source: Verify that the data source is correctly configured and that the data being extracted is in the expected format.
  Review InfoPackage Settings: Ensure that the InfoPackage settings are correct, including the selection criteria and data extraction settings.
  Validate Data Target: Check the target InfoProvider to ensure it is properly configured and not in a locked state. If necessary, unlock the InfoProvider.
  Examine Transformations: Review any transformations associated with the data load for errors or misconfigurations. Make sure that all required fields are mapped correctly.
  Data Quality Checks: Perform data quality checks on the source data to identify and resolve any integrity issues, such as duplicates or missing values.
  Check Logs: Review the error logs for more detailed information about the specific cause of the error. This can provide insights into what went wrong during the data load process.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) to monitor and manage data loads.
  SAP Notes: Check SAP Notes related to RSBK121 for any specific patches or updates that may address known issues.
  Documentation: Refer to SAP BW documentation for best practices on data loading and troubleshooting common errors.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the RSBK121 error in SAP BW.