How To Fix SY184 - Value in switch statement not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: SY - ABAP/4 system messages

• Message number: 184

• Message text: Value in switch statement not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SY184 - Value in switch statement not allowed ?

  The SAP error message SY184 ("Value in switch statement not allowed") typically occurs in ABAP programming when a CASE or SWITCH statement is used with a value that is not valid or not allowed for the specified data type. This can happen for several reasons, such as:
  Causes:
  
  Invalid Data Type: The value being evaluated in the SWITCH statement does not match the expected data type. For example, if the switch expression is expected to be an integer, but a string is provided.
  Out of Range Values: The value being evaluated is outside the range of values that the SWITCH statement can handle.
  Non-constant Values: The SWITCH statement may be expecting constant values, and a variable or a non-constant expression is being used.
  Incorrect Syntax: There may be a syntax error in the way the SWITCH statement is structured.
  
  Solution:
  To resolve the SY184 error, you can take the following steps:
  
  
  Check Data Types: Ensure that the value being evaluated in the SWITCH statement matches the expected data type. If necessary, convert the value to the appropriate type using type conversion functions.
  DATA: lv_value TYPE i.
  lv_value = '10'. " Ensure this is an integer
  
  
  Validate Values: Make sure that the values used in the SWITCH statement are valid and within the expected range. If you are using constants, ensure they are defined correctly.
  
  
  Use Constants: If the SWITCH statement requires constant values, ensure that you are using constants rather than variables.
  
  
  Review Syntax: Double-check the syntax of your SWITCH statement. Ensure that it follows the correct structure and that all cases are properly defined.
  Example of a correct SWITCH statement:
  DATA: lv_value TYPE i.
  lv_value = 1.
  
  SWITCH lv_value.
    CASE 1.
      WRITE 'Value is 1'.
    CASE 2.
      WRITE 'Value is 2'.
    WHEN OTHERS.
      WRITE 'Value is something else'.
  ENDSWITCH.
  
  
  Debugging: If the issue persists, use debugging tools to step through the code and inspect the values being passed to the SWITCH statement.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for detailed information on the SWITCH statement and its usage.
  Data Types in ABAP: Familiarize yourself with the various data types in ABAP and their constraints to avoid type-related errors.
  Error Handling: Implement error handling in your ABAP code to gracefully manage unexpected values or types.
  
  By following these steps, you should be able to identify and resolve the cause of the SY184 error in your ABAP code.