When sending Intercompany transactions to Intercompany Partner, the originating company's outbox transaction number is assigned to in the destination's company inbox. When there is more than one originating company sending to the same destination company, there are duplicate inbox transaction numbers. When the user accepts the document in the inbox, they receive a message saying it is a duplicate transaction. It is not a duplicate transaction because they are from separate IC partners. Very confusing for the user. Maybe create a new field for inbox transaction document number used to accept the document.