TMEP § 1402.10
See TMEP §1104.10(b)(iii) regarding examination of the identification of goods or services in an amendment to allege use; TMEP §1108.02(d) regarding the identification of goods or services in a request for an extension of time to file a statement of use; and TMEP §1109.13 regarding examination of the identification of goods or services in a statement of use.