The trade is advised that a Post Summary Correction (PSC) is not the proper mechanism to
report omitted invoice(s) from the entry package at the time of entry. Omitted invoice(s) require a new entry not the submission of a PSC or Post Entry Amendment.
The Business Rules and Process Document (BRPD) is currently being revised to include this additional guidance.
We will issue a subsequent CSMS message once the BRPD is posted to CBP.gov