How To Fix ISUDEVCHECK019 - FuMo &: WHEN statement missing for field &

SAP Error Message - Details

• Message type: E = Error

• Message class: ISUDEVCHECK - IS-U Device Checker: Messages

• Message number: 019

• Message text: FuMo &: WHEN statement missing for field &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ISUDEVCHECK019 - FuMo &: WHEN statement missing for field & ?

  The SAP error message ISUDEVCHECK019 typically occurs in the context of ABAP programming, particularly when dealing with the development of custom programs or enhancements in the SAP IS-U (Utilities) module. This error indicates that there is a missing WHEN statement for a field in a CASE statement, which is essential for proper branching logic in the code.
  Cause:
  The error arises when a CASE statement is used without a corresponding WHEN clause for a specific field. In ABAP, a CASE statement is used to execute different blocks of code based on the value of a variable. If a value is encountered that does not have a corresponding WHEN clause, the system raises this error to alert the developer that the logic is incomplete.
  Solution:
  To resolve the ISUDEVCHECK019 error, you should:
  
  
  Review the Code: Locate the CASE statement in your ABAP code where the error is reported. Check the variable being evaluated in the CASE statement.
  
  
  Add Missing WHEN Clauses: Ensure that there is a WHEN clause for every possible value that the variable can take. If there are values that are not being handled, add the appropriate WHEN clauses.
  Example:
  CASE field_name.
    WHEN 'value1'.
      " Code for value1
    WHEN 'value2'.
      " Code for value2
    WHEN OTHERS.
      " Code for all other values
  ENDCASE.
  
  
  Use WHEN OTHERS: If you are unsure of all possible values, consider adding a WHEN OTHERS clause to handle any unexpected values gracefully.
  
  
  Test the Changes: After making the necessary changes, test the program to ensure that it runs without errors and that the logic behaves as expected.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for detailed information on the CASE statement and its usage.
  Debugging: Use the ABAP debugger to step through the code and identify the values being passed to the CASE statement, which can help in understanding why the error is occurring.
  Code Review: If you are working in a team, consider having a peer review your code to catch any logical errors or omissions.
  
  By following these steps, you should be able to resolve the ISUDEVCHECK019 error and ensure that your ABAP code functions correctly.