12 C.F.R. § 3.123 – Ongoing qualification.

(a) Changes to advanced systems. A national bank or Federal savings association must meet all the qualification requirements in § 3.122 on an ongoing basis. A national bank or Federal savings association must notify the OCC when the national bank or Federal savings association makes any change to an advanced system that would result in a material change in the national bank's or Federal savings association's advanced approaches total risk-weighted asset amount for an exposure type or when the national bank or Federal savings association makes any significant change to its modeling assumptions.
(b) Failure to comply with qualification requirements.
1. (1) If the OCC determines that a national bank or Federal savings association that uses this subpart and that has conducted a satisfactory parallel run fails to comply with the qualification requirements in § 3.122, the OCC will notify the national bank or Federal savings association in writing of the national bank's or Federal savings association's failure to comply.
2. (2) The national bank or Federal savings association must establish and submit a plan satisfactory to the OCC to return to compliance with the qualification requirements.
3. (3) In addition, if the OCC determines that the national bank's or Federal savings association's advanced approaches total risk-weighted assets are not commensurate with the national bank's or Federal savings association's credit, market, operational, or other risks, the OCC may require such a national bank or Federal savings association to calculate its advanced approaches total risk-weighted assets with any modifications provided by the OCC.