TMEP § 819.02(e)
The application must include a filing fee for each class of goods/services, as required by 37 C.F.R. §2.6(a)(1)(iii). 37 C.F.R. §2.22(a)(8). The trademark electronic filing system will require all known filing fees at the time of filing, and such fees must be paid in order to submit the application.
The insufficient information fee will not be required if the examining attorney determines that the identification includes goods and/or services in more than one class and the fees paid at the time of filing were not sufficient to cover all classes. The insufficient information fee does not apply to deficiencies arising from identification-related requirements, including requirements that arise from an identification falling within more than one class. In general, identification-related deficiencies in an application will incur the free-form text ID fee under 37 C.F.R. §2.22(a)(20). See TMEP §819.03 for the identification-related deficiencies that incur the free-form text ID fee and §819.05(c) for further discussion of different fees applying to the same application.