How To Fix RSDS188 - Delta field &1 does not exist in the field list

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 188

• Message text: Delta field &1 does not exist in the field list

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS188 - Delta field &1 does not exist in the field list ?

  The SAP error message RSDS188 indicates that a delta field specified in a DataSource does not exist in the field list of the DataSource. This typically occurs when you are working with SAP BW (Business Warehouse) and trying to set up or manage delta loads for a DataSource.
  Cause:
  
  Field Mismatch: The delta field you are trying to use is not present in the DataSource's field list. This can happen if the DataSource was modified, or if the delta field was removed or renamed.
  Incorrect Configuration: The DataSource may not be properly configured to include the necessary fields for delta processing.
  DataSource Activation: The DataSource may not have been activated after changes were made, leading to discrepancies between the DataSource definition and its actual implementation.
  Version Issues: If you are using an older version of the DataSource or if there are inconsistencies between the source system and the BW system, this error can occur.
  
  Solution:
  
  
  Check DataSource Definition:
  
  Go to the DataSource in the SAP BW system and check the field list to ensure that the delta field you are trying to use is indeed present.
  If the field is missing, you may need to modify the DataSource to include it.
  
  
  
  Modify DataSource:
  
  If the delta field is not present, you can add it to the DataSource. This may involve modifying the underlying structure in the source system if the field was removed or renamed.
  
  
  
  Activate DataSource:
  
  After making any changes to the DataSource, ensure that you activate it. This can be done in the DataSource maintenance transaction (e.g., RSA1).
  
  
  
  Check Delta Configuration:
  
  Ensure that the delta configuration for the DataSource is set up correctly. This includes checking the delta mechanism (e.g., delta queue, timestamp, etc.) and ensuring that it aligns with the fields available.
  
  
  
  Recheck Source System:
  
  If the DataSource is based on a source system (like an SAP ERP system), check the source system to ensure that the field exists there and is being extracted correctly.
  
  
  
  Transport Issues:
  
  If the DataSource was transported from another system, ensure that all necessary objects and configurations were transported correctly.
  
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to manage DataSources and check their configurations.
  Documentation: Refer to SAP documentation for specific DataSource configurations and delta handling.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific DataSource you are working with.
  
  By following these steps, you should be able to resolve the RSDS188 error and ensure that your DataSource is correctly configured for delta processing.