29 C.F.R. § 4000.31 Is my issuance untimely if I miss a few participants or beneficiaries?
Title 29 - Labor
The PBGC will not treat your issuance as untimely based on your failure to provide the issuance to a participant or beneficiary in a timely manner if— (a) The failure resulted from administrative error; (b) The failure involved only a de minimis percentage of intended recipients; and (c) You resend the issuance to the intended recipient promptly after discovering the error.
Title 29: Labor
PART 4000—FILING, ISSUANCE, COMPUTATION OF TIME, AND RECORD RETENTION
Subpart C—Determining Filing and Issuance Dates
§ 4000.31 Is my issuance untimely if I miss a few participants or beneficiaries?

