How To Fix RSDS306 - Delta mod &1 is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 306

• Message text: Delta mod &1 is not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS306 - Delta mod &1 is not supported ?

  The SAP error message RSDS306 indicates that a delta modification for a specific data source (denoted by &1) is not supported. This typically occurs in the context of SAP BW (Business Warehouse) when working with delta loads from a source system.
  Cause:
  
  Unsupported Delta Mechanism: The data source you are trying to use may not support delta extraction. This can happen if the data source is not configured for delta or if it is a type that does not allow delta loads (e.g., certain types of flat files or non-transactional data sources).
  Incorrect Configuration: The data source might not be properly set up in the source system or in the BW system. This includes missing delta settings or incorrect extraction methods.
  Data Source Type: Some data sources, especially those that are not transactional (like master data), may not support delta extraction.
  Technical Issues: There could be technical issues with the data source or the connection between the source system and the BW system.
  
  Solution:
  
  Check Data Source Configuration: Verify the configuration of the data source in the source system. Ensure that it is set up for delta extraction. You may need to consult the documentation for the specific data source type.
  Use Full Load: If delta extraction is not supported, consider using a full load instead. This can be done by changing the extraction method in the InfoPackage.
  Update Data Source: If the data source is not configured for delta, you may need to update it. This could involve changing the extraction method or modifying the data source settings in the BW system.
  Consult SAP Notes: Check for any relevant SAP Notes that might address this issue. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Check for Updates: Ensure that both the source system and the BW system are up to date with the latest patches and updates, as this can sometimes resolve compatibility issues.
  
  Related Information:
  
  SAP BW Documentation: Review the official SAP BW documentation for information on data source types and delta extraction.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) and RSO2 (Data Source Maintenance) for managing data sources in BW.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP Basis or BW team for further investigation.