PO output type is not reflected in PO message.
I have created new PO output type for standard PO Document type.Which is also reflected in NACE.But while creating the PO
it couldnt reflected in PO o/p type in mesaage tab.
have you maintained message determination schema for your purchase order document type.
Please check whether message type has been assigned in mesage schema for purchase order or not in SPRO-MM-Purchasing-Message-message determinationschema-define message schema for purchase order