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How To Fix FDT_EXPRESSIONS821 - Invalid procedure call: Both method and function module provided


SAP Error Message - Details

  • Message type: E = Error

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

  • Message number: 821

  • Message text: Invalid procedure call: Both method and function module provided

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  • 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.



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    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.

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Smart SAP Assistant

  • What is the cause and solution for SAP error message FDT_EXPRESSIONS821 - Invalid procedure call: Both method and function module provided ?

    The SAP error message FDT_EXPRESSIONS821 indicates that there is an issue with the way a procedure is being called in the context of the SAP FDT (Form Data Tool) framework. Specifically, the error message states that both a method and a function module have been provided for the same call, which is not allowed.

    Cause:

    This error typically occurs when:

    1. A procedure is defined in a way that it references both a method (from a class) and a function module (a standalone function) simultaneously.
    2. There is a misconfiguration in the expression or the procedure definition where both types of callable entities are specified, leading to ambiguity.

    Solution:

    To resolve this error, you can take the following steps:

    1. Check Procedure Definition:

      • Go to the procedure definition in the FDT.
      • Ensure that you are only using either a method or a function module, but not both. Remove one of them based on your requirement.
    2. Review the Call:

      • If you are calling a procedure, ensure that the call is consistent with the definition. If the procedure is defined as a method, do not attempt to call it as a function module, and vice versa.
    3. Debugging:

      • If you are unsure where the conflict is occurring, you may need to debug the procedure to see how it is being called and what parameters are being passed.
    4. Consult Documentation:

      • Review the SAP documentation related to FDT and procedures to ensure that you are following the correct syntax and guidelines.
    5. Testing:

      • After making the necessary changes, test the procedure again to ensure that the error is resolved.

    Related Information:

    • FDT (Form Data Tool): This is a tool used in SAP for managing forms and data processing. Understanding how procedures, methods, and function modules work within this context is crucial.
    • Methods vs. Function Modules: In SAP ABAP, methods are associated with classes (object-oriented programming), while function modules are standalone procedures. Understanding the distinction is important for proper implementation.
    • SAP Notes and Community: If the issue persists, consider checking SAP Notes or reaching out to the SAP Community for additional insights or similar cases.

    By following these steps, you should be able to identify and resolve the cause of the FDT_EXPRESSIONS821 error in your SAP environment.

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