This service is used to perform Interest Optimization Structure related operations like fetch, authorize.Interest Optimization method works by applying preferential pricing across a group of accounts on the basis of pre-determined criteria that are typically based on a net aggregate balance threshold. For example, a company with multiple credit balances distributed across its various operating centers may find that individually these balances only qualify for the lowest interest-rate tier payable on credit balances. By contrast, under an interest-Optimization arrangement, the total of these balances is used to enhance the qualifying tier of the individual balances