You cannot edit the section directly in modification mode

What causes this issue?

The section cannot be edited directly, since the Modification Assistant
is currently switched on for this class.

System Response

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

How to fix this error?

You can only edit the protected or private section directly if the
Modification Assistant in the Class Builder is switched off for this
class (Choose <ZK>Edit->Modification Operations-> Switch Off
Assistant).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.