Sections 901 of 45 Pa.C.S. (relating to official text of published documents) provides that if an agency discovers an error or omission in the Code or in the official text of a document published under this part, the agency shall forthwith deposit, without regard to the requirements of § 7.1 (relating to notice of proposed rulemaking required) and § 7.2 (relating to adoption of regulations) with the Bureau an appropriate corrective amendment to the official text. The agency may specify that the amendment shall be effective as of the effective date of the defective official text with respect to persons who have had actual knowledge of the discrepancy.
1 Pa. Code § 13.56
This section cited in 1 Pa. Code § 13.52 (relating to filing by Bureau).