How To Fix UPF161 - Only variables or type I or digits are allowed as an argument

SAP Error Message - Details

• Message type: E = Error

• Message class: UPF - Planning Functions

• Message number: 161

• Message text: Only variables or type I or digits are allowed as an argument

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UPF161 - Only variables or type I or digits are allowed as an argument ?

  The SAP error message UPF161 indicates that there is an issue with the arguments being passed to a function or method in your ABAP code. Specifically, it means that the arguments must be either variables, type I (integer), or digits, but something else is being used.
  Cause:
  This error typically occurs in the following scenarios:
  
  Incorrect Data Type: You are trying to pass a constant or a literal that is not of type I or a variable that is not defined correctly.
  Invalid Expression: The expression you are using as an argument is not valid in the context where it is being used.
  Function Module or Method Call: If you are calling a function module or method, the parameters you are passing do not match the expected types.
  
  Solution:
  To resolve the UPF161 error, you can take the following steps:
  
  
  Check Argument Types: Review the arguments you are passing to the function or method. Ensure that they are either:
  
  Variables of type I (integer)
  Numeric literals (digits)
  Ensure that any constants or literals are of the correct type.
  
  
  
  Variable Declaration: If you are using variables, ensure they are declared correctly and initialized if necessary. For example:
  DATA: lv_variable TYPE i.
  lv_variable = 10.
  CALL FUNCTION 'FUNCTION_NAME'
    EXPORTING
      param1 = lv_variable.
  
  
  Review Function Signature: Check the documentation or the definition of the function module or method you are calling to ensure you are passing the correct types and number of parameters.
  
  
  Debugging: If you are unsure where the error is occurring, use the ABAP debugger to step through your code and inspect the values and types of the variables being passed.
  
  
  Type Casting: If necessary, you can convert or cast variables to the appropriate type using ABAP type conversion functions.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with ABAP data types and their usage. The type I is used for integers, while other types like C (character) or F (floating point) may not be acceptable in this context.
  Function Module Documentation: Always refer to the SAP documentation for the specific function module or method you are using to understand the expected parameter types.
  Error Handling: Implement error handling in your code to gracefully manage unexpected input or types.
  
  By following these steps, you should be able to identify and correct the cause of the UPF161 error in your ABAP code.