Lines were deleted in a forbidden way and saved immediately

What causes this issue?

You have removed one or more functional locations from the list where
it was already entered and confirmed using ENTER - without using the
<LS>Delete Location</> symbol intended for this purpose - and saving
immediately.

System Response

If functional locations are not removed with the symbol <ZH>intended
for this purpose</> and saved immediately, then these functional
locations will still be created.
To facilitate the correct type of deletion, the system branches again
to the input template so that you can use the symbol intended for this
purpose for deleting the functional location(s).

How to fix this error?

Check the functional locations and, if necessary, use the symbol
<LS>Delete Location</> for deleting. Then save your entries.

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.