When a certificate may not be issued
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
No certificate shall be issued for naval stores unless the naval stores have been packed, sampled, marked, and identified as required by the provisions in this part, and otherwise conform with the act and such provisions. The results of the examination of such naval stores or anything offered as such may be covered by a written report, which in no case shall be construed as a certificate.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.