How To Fix RFAC_QUICKFIX179 - Can't decide parameter type for &1, since it is defined with LIKE

SAP Error Message - Details

• Message type: E = Error

• Message class: RFAC_QUICKFIX - Refactoring Messages

• Message number: 179

• Message text: Can't decide parameter type for &1, since it is defined with LIKE

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RFAC_QUICKFIX179 - Can't decide parameter type for &1, since it is defined with LIKE ?

  The SAP error message RFAC_QUICKFIX179 indicates that there is an issue with the parameter type definition in a program or function module. Specifically, the error arises when a parameter is defined using the LIKE keyword, but the system is unable to determine the exact data type for that parameter.
  Cause:
  
  LIKE Keyword Usage: The LIKE keyword is used to define a variable based on the data type of another field. If the reference field is not clearly defined or if it is ambiguous, the system cannot resolve the type for the parameter.
  Missing or Incorrect Data Element: The data element or field that is being referenced may not exist, or it may not have a clear definition in the data dictionary.
  Dynamic Typing Issues: If the program is trying to dynamically determine the type of a parameter at runtime, and it relies on a LIKE definition that is not resolvable, this error can occur.
  
  Solution:
  
  Check the Definition: Review the parameter definition in the program or function module. Ensure that the field being referenced with LIKE is correctly defined in the data dictionary.
  Use Explicit Data Types: Instead of using LIKE, consider defining the parameter with an explicit data type (e.g., CHAR, INT, etc.) to avoid ambiguity.
  Data Element Verification: Verify that the data element or field you are referencing exists and is correctly defined in the ABAP Dictionary (transaction SE11).
  Refactor Code: If possible, refactor the code to avoid using LIKE for parameters that need to be clearly defined. This can help in making the code more robust and easier to maintain.
  Check for Changes: If the program was recently modified, check if any changes to the data dictionary or related objects might have caused the issue.
  
  Related Information:
  
  ABAP Dictionary: Use transaction SE11 to check the definitions of data elements and tables.
  ABAP Development Tools: Utilize the ABAP Workbench (SE80) to navigate through the program and identify where the error is occurring.
  Documentation: Refer to SAP documentation for best practices on defining parameters and using the LIKE keyword.
  Debugging: If the error persists, consider using the debugger to trace the execution and identify the exact point of failure.
  
  By following these steps, you should be able to resolve the RFAC_QUICKFIX179 error and ensure that your parameter types are correctly defined.