How To Fix OO620 - Sequence of exceptions has been adjusted

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 620

• Message text: Sequence of exceptions has been adjusted

What causes this issue?

When you use exception classes in a method interface, they must be
sorted according to the inheritance hierarchy. Classes that are further
down this hierarchy must be specified first. If you do not comply with
this sorting rule, the compiler returns a syntax error. The background
to this is that a user of a method can recognize the sequence in which
it must catch the exceptions by the signature.

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

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OO620 - Sequence of exceptions has been adjusted ?

  The SAP error message OO620, which states "Sequence of exceptions has been adjusted," typically occurs in the context of object-oriented programming within SAP, particularly when dealing with exception handling in ABAP (Advanced Business Application Programming).
  Cause:
  This error usually arises when there is a mismatch in the sequence of exception handling in your ABAP code. Specifically, it can occur when:
  
  An exception is raised that is not handled in the expected order.
  The program attempts to handle exceptions that are not defined in the correct sequence.
  There is an inconsistency in the way exceptions are declared and raised in the method or function module.
  
  Solution:
  To resolve the OO620 error, you can take the following steps:
  
  
  Check Exception Handling: Review the code where the exception is raised and ensure that the exceptions are being handled in the correct order. Make sure that the exceptions are declared in the method signature and that they are being caught in the correct sequence.
  
  
  Review Method Signatures: If you are working with methods in classes, check the method signatures to ensure that the exceptions declared in the method match those that are being raised.
  
  
  Debugging: Use the ABAP debugger to step through the code and identify where the exception handling is failing. This can help you pinpoint the exact location and reason for the error.
  
  
  Documentation: Refer to the SAP documentation for the specific classes and methods you are using. This can provide insights into the expected behavior and exception handling requirements.
  
  
  Code Review: If you are working in a team, consider having another developer review your code. A fresh set of eyes can often catch issues that you might have overlooked.
  
  
  Testing: After making changes, thoroughly test the code to ensure that the exception handling works as expected and that the error does not recur.
  
  
  Related Information:
  
  ABAP Exception Handling: Familiarize yourself with the principles of exception handling in ABAP, including the use of TRY, CATCH, and ENDTRY blocks.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional context.
  Community Forums: Engage with the SAP community forums or Stack Overflow, where other developers may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify and correct the cause of the OO620 error in your SAP ABAP code.