For G-invoicing projects, Is it mandatory configure all expenditure types at Bill Rate Schedule?

We ran into Draft Revenue generation process errors with the error No bill rate schedule for G-invoicing project revenue. When we reviewed the Non-Labor Bill rate schedule configuration after an Oracle SR, we are asked to add expenditure types to Non-Labor bill rate schedule. We did not have to define all the expenditure types before G-invoicing projects. Is it mandatory to load all expenditure types(14000 object classes) for a bill rate schedule to be used for G-invoicing, Is there a override feature or to just include all expenditure types without having to configure 14k values??