& for account & already requested

What causes this issue?

Within document entry, several similar correspondence requests cannot
be entered for an account. You can, however, request different
correspondence TYPES for an account.

System Response

The request is not stored.

How to fix this error?

If you want to request another correspondence type or another
account, enter a new correspondence request with the valid
specifications. If you want to request the same correspondence type for
the same account again, because, for example, you want to predefine an
alternative text or alternative period selections, you must request
this correspondence seperately after completing the posting transaction.
To do this, select <LS>Account </>-> <LS>Correspondence </>->
<LS>Request </>in the menu of the application area.
If you want to cancel correspondence requests before printing, select
<LS>Account </>-> <LS>Correspondence </>-> <LS>Edit </> in the menu of
the application area.

Error message extract from SAP system. Copyright SAP SE.