47 CFR 1.8004 - Penalty for Failure to Provide the FRN.
(a) Electronic filing systems for filings that require the FRN will not accept a filing without the appropriate FRN. If a party seeks to make an electronic filing and does not have an FRN, the system will direct the party to the CORES website to obtain an FRN.
(c) Where the Commission has not established a filing deadline for an application, a missing or invalid FRN on such an application may be corrected and the application resubmitted. Except as provided in paragraph (d) of this section or in other Commission rules, the date that the resubmitted application is received by the Commission with a valid FRN will be considered the official filing date.
(d) Except for the filing of tariff publications (see 47 CFR 61.1(b)) or as provided in other Commission rules, where the Commission has established a filing deadline for an application and that application may be filed on paper, a missing or invalid FRN on such an application may be corrected with ten (10) business days of notification to the filer by the Commission staff and, in the event of such timely correction, the original date of filing will be retained as the official filing date.