How To Fix FIN_RE_ABAP_ENG301 - Function &1 does not support type &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FIN_RE_ABAP_ENG - FIN Rule Engine ABAP Engine Messages

• Message number: 301

• Message text: Function &1 does not support type &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FIN_RE_ABAP_ENG301 - Function &1 does not support type &2 ?

  The SAP error message FIN_RE_ABAP_ENG301 with the description "Function &1 does not support type &2" typically indicates that there is a mismatch between the expected data type and the actual data type being passed to a function module or method in an ABAP program. This error often arises in the context of financial applications or modules where specific data types are required for processing.
  Cause:
  
  Data Type Mismatch: The function module or method is expecting a specific data type (e.g., a structure, table, or primitive type) but is receiving a different type.
  Incorrect Parameter Passing: The parameters being passed to the function do not match the expected signature defined in the function module.
  Changes in Function Module: If the function module has been modified (e.g., in a newer version of SAP), it may no longer support the data type that was previously used.
  Custom Code Issues: If you are using custom ABAP code, there may be an error in how the parameters are defined or passed.
  
  Solution:
  
  Check Function Module Signature: Review the documentation or the definition of the function module (using transaction SE37) to understand the expected parameter types.
  Adjust Data Types: Ensure that the data types of the variables being passed to the function match the expected types. You may need to convert or cast the data types appropriately.
  Debugging: Use the ABAP debugger to step through the code and identify where the mismatch occurs. This can help you pinpoint the exact variable causing the issue.
  Review Custom Code: If the error is occurring in custom code, review the logic to ensure that the correct data types are being used and passed to the function.
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or updates regarding the function module or related components that may address this issue.
  
  Related Information:
  
  Transaction Codes: Use transaction SE37 to view and analyze the function module.
  ABAP Data Types: Familiarize yourself with ABAP data types and structures to ensure proper usage.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  Documentation: Refer to SAP Help documentation for detailed information on the specific function module and its parameters.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.