; (B) the Corporation has established and made publicly available a description of the process the Corporation will use to validate and approve credit scoring models, which shall comply with any standards and criteria established by the Director of the Federal Housing Finance Agency pursuant to section 1328 of the Federal Housing Enterprises Financial Safety and Soundness Act of 1992; and (C) the Corporation provides for use of the credit score by all of the automated underwriting systems of the Corporation and any other procedures and systems used by the Corporation to purchase residential mortgages. (3) Validation and approval process The process described in paragraph (2)(B) shall include an evaluation of— (A) the criteria used to validate and approve a credit scoring model, including measures of the integrity, reliability, and accuracy of that model and an assurance that the model is consistent with the safe and sound operation of the Corporation; and (B) the data necessary for the validation of the credit scoring model. (4) Application If the Corporation elects to use a credit score under this subsection, the Corporation shall solicit applications from developers of credit scoring models for the validation and approval of those models under the process described in paragraph (2)(B). (5) Timeframe for determination