SAP Message PT_TMW_HEADER_CUST001 - Choose a different ID; ID & already exists

Diagnosis
The ID &V1& is already being used for an object or layout.
Since UIA objects and GUI objects are created with the same name inthis Customizing step, an ID should not be used for a UIA object if aGUI object already has this ID (and vice versa).

Procedure
Choose a different ID.