41 CFR § 102-118.130
Must my agency use a GBL for express, courier, or small package shipments?
June 9, 2020
No, however, in using commercial forms all shipments must be subject to the terms and conditions set forth for use of a bill of lading for the Government. Any other non-conflicting applicable contracts or agreements between the TSP and an agency involving buying transportation services for Government traffic remain binding. This purchase does not require a SF 1113. When you are using GSA's schedule for small package express delivery, the terms and conditions of that contract are binding.