A code specifying the functional type of the Invoice.
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2381| Identifier/Error message | Flag | 
|---|---|
| BR-04 An Invoice shall have an Invoice type code (BT-3).  | 
            fatal | 
| BR-CL-01 The document type code MUST be coded by the invoice and credit note related code lists of UNTDID 1001.  | 
            fatal | 
| PEPPOL-EN16931-P0101 Credit note type code MUST be set according to the profile.  | 
            fatal |