Standard append & for view & already exists

What causes this issue?

You decided to create a new <DS:TX.DDDOK_VIEW_APPEND>append view</> for
view &V2&. Normally the system proposes a standard name. In this case
there is already an append view for this view having this standard
name. The system therefore assumes that you do not want to use this
standard append view.

System Response

The system does not make a proposal for the name.

How to fix this error?

Enter a name for the append view. You can also choose the given
standard name.

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.