If the GAC was submitted but the document type and LPCO reference number were not filled in, the Canadian data type for the HS code should be 2004, which pertains to Agricultural Products, and the LPCO reference number should be GIP 100. It is recommended to consult the CBSA website for proper regulations, which can be found at: https://laws-lois.justice.gc.ca/eng/regulations/SOR-95-37/page-2.html#docCont