Name already exists (You cannot create by insertion)

What causes this issue?

You want to copy a field to a table control from the program or ABAP
Dictionary as an element by "pasting" it.
There is already a screen element with this name on the screen.

System Response

The field cannot be inserted in the table control.

How to fix this error?

If you want to insert this field in the table control, first change the
name of the screen element having the same name.

Error message extract from SAP system. Copyright SAP SE.