How To Fix RSDS098 - The field positions cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 098

• Message text: The field positions cannot be changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS098 - The field positions cannot be changed ?

  The SAP error message RSDS098, which states "The field positions cannot be changed," typically occurs in the context of DataSource or InfoSource configuration in SAP BW (Business Warehouse). This error indicates that there is an issue with the field mapping or the structure of the DataSource that is being used.
  Cause:
  
  Field Position Mismatch: The error often arises when there is an attempt to change the position of fields in a DataSource or InfoSource that is already being used in a DataFlow or has existing data targets.
  Existing Data: If the DataSource has already been activated and data has been loaded, changing the field positions can lead to inconsistencies in the data model.
  Incompatible Changes: Certain changes to the structure of a DataSource (like changing field types or positions) are not allowed if they would affect existing data or mappings.
  
  Solution:
  
  Check Field Mapping: Review the field mapping in the DataSource or InfoSource. Ensure that the field positions are correct and that you are not trying to change them in a way that conflicts with existing configurations.
  Create a New DataSource: If you need to change the field positions significantly, consider creating a new DataSource instead of modifying the existing one. This allows you to define the structure without affecting existing data.
  Deactivate and Reactivate: If you are certain that the changes are necessary, you may need to deactivate the DataSource, make the changes, and then reactivate it. However, be cautious as this may lead to data inconsistencies.
  Check for Dependencies: Ensure that there are no dependent objects (like InfoObjects, InfoProviders, or queries) that rely on the DataSource you are trying to modify. If there are, you may need to adjust or delete those dependencies first.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of BW you are using for any additional guidelines or restrictions regarding DataSource modifications.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Testing: Always test changes in a development or test environment before applying them to production to avoid data integrity issues.
  
  By following these steps, you should be able to resolve the RSDS098 error and successfully manage your DataSource configurations in SAP BW.