How To Fix C0853 - - Function name missing -> Unable to assign parameter &

SAP Error Message - Details

• Message type: E = Error

• Message class: C0 - PP-PI: Messages for PI Sheet and Syntax Checker

• Message number: 853

• Message text: - Function name missing -> Unable to assign parameter &

What causes this issue?

No function module has been allocated to the function call. For this
reason, parameter &V1& defined in the function call has no reference.

System Response

Parameter &V1& is ignored in the process instruction assistant.
If you choose <LS>Copy</> to exit the process instruction assistant,
the settings for parameter &V1& are deleted from the process
instruction.

How to fix this error?

RESET N1
Allocate a function module to the function call.
Make the appropriate settings for the parameters of this function
module in the function call.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C0853 - - Function name missing -> Unable to assign parameter & ?

  The SAP error message C0853 - "Function name missing -> Unable to assign parameter &" typically occurs in the context of ABAP programming or when working with function modules. This error indicates that there is an issue with the function call, specifically that the function name is not provided or is not recognized.
  Cause:
  
  Missing Function Name: The most common cause is that the function name is not specified in the call to a function module.
  Incorrect Syntax: There may be a syntax error in the ABAP code where the function is being called.
  Dynamic Function Calls: If you are using dynamic function calls (e.g., using CALL FUNCTION with a variable), the variable may not be correctly populated with a valid function name.
  Parameter Mismatch: If the function name is provided but the parameters do not match the expected signature, it can lead to confusion in the function call.
  
  Solution:
  
  Check Function Name: Ensure that the function name is correctly specified in the CALL FUNCTION statement. It should not be empty or null.
  CALL FUNCTION 'FUNCTION_NAME'
    EXPORTING
      param1 = value1
      param2 = value2
    IMPORTING
      result = result_variable.
  
  Review Syntax: Verify that the syntax of your ABAP code is correct. Look for any typos or missing components in the function call.
  Dynamic Calls: If using dynamic function calls, ensure that the variable holding the function name is correctly assigned and contains a valid function name.
  DATA: lv_function_name TYPE string.
  lv_function_name = 'FUNCTION_NAME'.
  CALL FUNCTION (lv_function_name)
    EXPORTING
      param1 = value1
      param2 = value2.
  
  Check Function Module: Make sure that the function module you are trying to call exists in the system and is active. You can check this in transaction SE37.
  Debugging: If the issue persists, use the debugger to step through the code and check the values of the variables being used in the function call.
  
  Related Information:
  
  Transaction Codes: Use transaction SE37 to view and test function modules.
  Documentation: Refer to the SAP documentation for the specific function module you are working with to understand its parameters and expected usage.
  ABAP Development: Familiarize yourself with ABAP programming best practices to avoid common pitfalls related to function calls.
  
  If you continue to experience issues after checking these points, consider reaching out to your SAP support team or consulting the SAP community for further assistance.