How To Fix 5P420 - & Beginning of function & or end of function & missing

SAP Error Message - Details

• Message type: E = Error

• Message class: 5P - Error Messages for Schema, Pers.Calc.Rule and Feature Checks

• Message number: 420

• Message text: & Beginning of function & or end of function & missing

What causes this issue?

You have tried to end a logical block with the function 'X'. However,
the logical block that was started with the function 'Y' has not yet
ended. Logical blocks represent the functions

LPBEG ... LPEND.
Example:

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

.
.
LPEND (Function X)

How to fix this error?

This situation could have occurred because:
You have forgotten to end the logical block
END
You have forgotten to begin the logical block LPBEG .. LPEND by placing
LPBEG after IF.
Insert the required function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 5P420 - & Beginning of function & or end of function & missing ?

  The SAP error message 5P420 typically indicates that there is a syntax error in the ABAP code, specifically related to the structure of a function module or method. The message "Beginning of function & or end of function & missing" suggests that the ABAP runtime environment is unable to find the expected start or end statements for a function or method.
  Causes:
  
  Missing Keywords: The function or method definition may be missing the FUNCTION or ENDFUNCTION keywords.
  Incorrect Nesting: There may be an issue with the nesting of functions or methods, where one is not properly closed before another begins.
  Typographical Errors: There could be typographical errors in the function or method declaration.
  Commenting Issues: Improperly commented code can lead to the parser misinterpreting the structure of the code.
  Code Corruption: In rare cases, the code may be corrupted or improperly saved.
  
  Solutions:
  
  Check Syntax: Review the ABAP code for the function or method in question. Ensure that all function definitions start with FUNCTION <function_name> and end with ENDFUNCTION.
  Verify Nesting: Ensure that all functions and methods are properly nested and that each opening statement has a corresponding closing statement.
  Look for Typos: Check for any typographical errors in the function or method names and keywords.
  Review Comments: Ensure that comments are properly formatted and do not interfere with the code structure.
  Use Syntax Check: Utilize the ABAP editor's syntax check feature (Ctrl + F2) to identify and correct any syntax errors.
  Debugging: If the error persists, consider debugging the code to identify the exact location of the issue.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for guidelines on function module and method definitions.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other developers who may have encountered similar issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message.
  
  By following these steps, you should be able to identify and resolve the cause of the error message 5P420 in your ABAP code.