Dynpro &1: DDIC structure &2 was modified during the run

What causes this issue?

Screen &V1& uses structure &V2& from the ABAP Dictionary. This structure
was modified in the ABAP Dictionary during the run of the current
transaction or the current program (time stamp of the structure in the
program: &V3&, time stamp of the structure in the ABAP Dictionary: &V4&
).

System Response

The execution of the program/transaction cannot be continued. For this
reason processing has been terminated.

How to fix this error?

Start the program/transaction again. The current version of the program
will be loaded and the inconsistency rectified.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.