How To Fix TD160 - You cannot copy form &1 in same client &2 w/o a target form

SAP Error Message - Details

• Message type: E = Error

• Message class: TD - SAPscript: Text editor, composer, forms, styles and fonts

• Message number: 160

• Message text: You cannot copy form &1 in same client &2 w/o a target form

What causes this issue?

Copying a form in the same client with the same name.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Enter a target client which is different to the source client or
specify a form name in the parameter <LS>Target form</>, under which
the form is to be stored in the target client.

Error message extract from SAP system. Copyright SAP SE.