How To Fix FDT_EXPRESSIONS665 - Mapping for non-existing source step is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 665

• Message text: Mapping for non-existing source step is invalid

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS665 - Mapping for non-existing source step is invalid ?

  The SAP error message FDT_EXPRESSIONS665 indicates that there is an issue with a mapping in the context of SAP Data Services or SAP Process Orchestration, specifically related to a non-existing source step in a data flow or mapping configuration. This error typically arises when the mapping references a source step that has either been deleted or is not properly defined.
  Cause:
  
  Deleted Source Step: The source step that the mapping is trying to reference has been removed from the data flow.
  Incorrect Mapping Configuration: The mapping may have been incorrectly configured, leading to references to non-existent steps.
  Changes in Data Flow: If the data flow has been modified (e.g., renaming or restructuring), it may lead to broken references.
  Transport Issues: If the mapping was transported from one system to another, it may not have all the necessary components or dependencies.
  
  Solution:
  
  Check the Data Flow: Open the data flow or mapping in the SAP Data Services or Process Orchestration tool and verify that all source steps are present and correctly configured.
  Recreate Missing Steps: If a source step has been deleted, you may need to recreate it or adjust the mapping to reference an existing step.
  Update Mapping: Modify the mapping to ensure that it only references valid and existing source steps.
  Validate Configuration: Use the validation tools available in the SAP environment to check for any inconsistencies or errors in the mapping configuration.
  Transport Dependencies: If the issue arose after a transport, ensure that all necessary components were included in the transport request.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Data Services or Process Orchestration for detailed information on mapping configurations and error handling.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and to find potential solutions or workarounds.
  Support Tickets: If the issue persists and cannot be resolved through the above steps, consider raising a support ticket with SAP for further assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the FDT_EXPRESSIONS665 error in your SAP environment.