28 CFR § 25.5 - Validation and data integrity of records in the system.
(a) The FBI will be responsible for maintaining data integrity during all NICS operations that are managed and carried out by the FBI. This responsibility includes:
(4) Quality control checks in the form of periodic internal audits by FBI personnel to verify that the information provided to the NICS Index remains valid and correct.
(b) Each data source will be responsible for ensuring the accuracy and validity of the data it provides to the NICS Index and will immediately correct any record determined to be invalid or incorrect.