How To Fix RSDS157 - &1: Unit field &2 is obsolete and is being deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 157

• Message text: &1: Unit field &2 is obsolete and is being deleted

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS157 - &1: Unit field &2 is obsolete and is being deleted ?

  The SAP error message RSDS157 indicates that a unit field in a DataSource is considered obsolete and is being deleted. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when there are changes in the underlying data model or when certain fields are no longer relevant for reporting or data extraction.
  Cause:
  
  Obsolescence of Fields: The field in question has been marked as obsolete in the DataSource or InfoSource. This can happen due to changes in the data model, such as the removal of certain fields from the source system or changes in business requirements.
  DataSource Changes: If the DataSource has been modified (e.g., fields added or removed), it may lead to the deletion of certain fields that are no longer needed.
  Versioning Issues: Sometimes, the error can arise from versioning issues where the DataSource is not aligned with the current version of the underlying data structure.
  
  Solution:
  
  Check DataSource Configuration: Review the configuration of the DataSource in the SAP BW system. Ensure that the fields you are using are still valid and necessary for your reporting needs.
  Update DataSource: If the field is indeed obsolete, you may need to update your DataSource to remove references to this field in your queries, reports, or transformations.
  Re-activate DataSource: After making necessary changes, re-activate the DataSource to ensure that the changes take effect.
  Adjust Queries/Reports: If you have queries or reports that rely on the obsolete field, you will need to adjust them to either remove the field or replace it with a suitable alternative.
  Consult Documentation: Check SAP notes or documentation related to the specific DataSource for any updates or changes that may have been made regarding the fields.
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may provide additional context or solutions for this specific error message.
  DataSource Documentation: Review the documentation for the specific DataSource to understand the changes that have been made and how they affect your data model.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to address the RSDS157 error and ensure that your DataSource and reporting structures are up to date.