Change the entry for the area class and the attributes

What causes this issue?

A shared objects area has an area class (R3TR CLAS) and a table entry
for the area attributes (R3TR SHMA). You want to change to object
catalog entry.

System Response

Information about the correct procedure.

How to fix this error?

If you want to change an object catalog entry, you must do so for both
objects simultaneously. You must enter the same package as the new entry
for both objects (class and area attributes). The two dialogs for the
change are displayed by the system one after the other.

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.