How To Fix FKKBIX651 - BRFplus: result data object of the function is not of Boolean type


SAP Error Message - Details

  • Message type: E = Error

  • Message class: FKKBIX - Conv.Inv.: Billing (Invoice Preprocessing)

  • Message number: 651

  • Message text: BRFplus: result data object of the function is not of Boolean type

  • Show details Hide details
  • What causes this issue?

    The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

    System Response

    How to fix this error?

    See the documentation about <DS:DE.DISC_FDT_FUNCTION_NAME_KK>BRFplus
    functions</>.

    Procedure for System Administrators


    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message FKKBIX651 - BRFplus: result data object of the function is not of Boolean type ?

    The SAP error message FKKBIX651 indicates that there is an issue with a BRFplus (Business Rule Framework plus) function where the result data object is expected to be of Boolean type (true/false), but it is not. This error typically arises when the function is designed to return a Boolean value, but the actual data type of the result is different (e.g., it could be a string, integer, or another type).

    Cause:

    1. Incorrect Data Type Definition: The result data object in the BRFplus function is defined with a data type that is not Boolean.
    2. Function Logic: The logic within the function may be returning a value that is not Boolean, such as a string or numeric value.
    3. Mapping Issues: If the function is being called from another context or application, there may be a mismatch in how the result is being interpreted or mapped.

    Solution:

    1. Check Data Object Definition:

      • Go to the BRFplus workbench and locate the function that is causing the error.
      • Verify the data type of the result data object. Ensure that it is set to Boolean.
    2. Review Function Logic:

      • Inspect the rules and expressions within the function to ensure that they are returning a Boolean value.
      • If the logic is complex, consider adding explicit checks or conversions to ensure the output is Boolean.
    3. Test the Function:

      • After making changes, test the function in the BRFplus workbench to ensure it returns the expected Boolean result.
    4. Check Calling Context:

      • If the function is being called from another application or context, ensure that the calling code is expecting a Boolean result and is handling it correctly.
    5. Documentation and Support:

      • Refer to SAP documentation for BRFplus for more detailed information on data types and function definitions.
      • If the issue persists, consider reaching out to SAP support or consulting with a developer who has experience with BRFplus.

    Related Information:

    • BRFplus Overview: BRFplus is a framework for defining and executing business rules in SAP applications. It allows for the creation of complex decision logic without the need for extensive coding.
    • Data Types in BRFplus: Understanding the different data types available in BRFplus (e.g., Boolean, String, Numeric) is crucial for defining functions correctly.
    • Debugging in BRFplus: Utilize the debugging tools available in the BRFplus workbench to trace the execution of rules and identify where the data type mismatch occurs.

    By following these steps, you should be able to resolve the FKKBIX651 error and ensure that your BRFplus function operates as intended.

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