The system deletes the selected field and copies it to the clipboard.
The system inserts the field in the table at the new position.
The order of the fields in the ABAP Dictionary can differ from the order of the fields in the database. Changing the order of the fields (with the exception of key fields) in the ABAP Dictionary does not result in a change in the database. In particular, a table conversion is not required (see Adjusting Database Structures ).
If the table is a check table, you cannot change the order of the key fields. In this case you must first delete the corresponding foreign keys.