Agency Identifier (AID) 3 Agency Identifier of account owner. Used in conjunction with the main account code, the AID represents the department or agency responsible for the TAS. Value required, never blank.
With regard to mortgage lending, the âpar rateâ is the interest rate a borrower will qualify for with a given bank or mortgage lender assuming there is no interest rate manipulation.
(commerce) 1  See par value.  the condition of equality between the current market value of a share, bond, etc, and its face value (the nominal par). This equality is indicated by at par, while above (or below) par indicates that the market value is above (or below) face value.