When forwarding customer shipping advise item(s) (CSA) to an existing customer invoice, (CIN), some fields must match: The Account, currency (CUR), the Location country code: LOCCC, the Payterm, Payby, and the Shipping address: SADDRID. If a Credit card Transaction id (CCTID) is defined on the customer shipping advise (CSA), this must match on the customer invoice (CIN). The invoice (CIN) must have status 1. If company settings are not activated that allow mixed periods, the period must match on both. This is the same for location (LOC) – if company settings are not activated that allow mixed locations, the location (LOC) must match.