How To Fix RJ418 - Set up delta only when extracting using a view

SAP Error Message - Details

• Message type: E = Error

• Message class: RJ - BW Extractor Handling Message Class

• Message number: 418

• Message text: Set up delta only when extracting using a view

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RJ418 - Set up delta only when extracting using a view ?

  The SAP error message RJ418, which states "Set up delta only when extracting using a view," typically occurs in the context of SAP BW (Business Warehouse) when you are trying to set up delta extraction for a DataSource that is not configured to support delta extraction. This error is often encountered when working with DataSources that are based on database tables or when the extraction method is not compatible with delta mechanisms.
  Cause:
  
  DataSource Type: The error usually arises when you attempt to set up delta extraction for a DataSource that is not based on a view. Delta extraction is only supported for DataSources that are defined using database views (e.g., SQL views) rather than direct table accesses.
  Configuration Issues: The DataSource may not be properly configured to support delta extraction. This can happen if the delta mechanism is not defined or if the DataSource is not set up correctly in the SAP BW system.
  Incompatible Extraction Method: The extraction method used may not support delta extraction. For example, if the DataSource is set to extract data from a table directly, it may not allow delta extraction.
  
  Solution:
  
  Use a View: If you need to perform delta extraction, consider creating a database view that encapsulates the logic of the underlying tables. Ensure that the view is designed to support delta extraction.
  Check DataSource Configuration: Review the configuration of the DataSource in the SAP BW system. Ensure that it is set up correctly to support delta extraction. This includes checking the extraction method and ensuring that the delta mechanism is defined.
  Change Extraction Method: If the DataSource is currently set to extract from a table, consider changing it to use a view instead. This may involve creating a new DataSource based on the view.
  Consult Documentation: Refer to SAP documentation or notes related to the specific DataSource you are working with. There may be specific guidelines or requirements for setting up delta extraction.
  
  Related Information:
  
  Delta Mechanisms: Understand the different delta mechanisms available in SAP BW, such as delta queue, timestamp-based delta, and others. Each has its own requirements and configurations.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on setting up delta extraction.
  SAP Community: Engage with the SAP Community forums or support channels for insights from other users who may have encountered similar issues.
  
  By addressing the underlying cause of the RJ418 error and ensuring that your DataSource is configured correctly, you should be able to resolve the issue and successfully set up delta extraction.