48 C.F.R. §§ 552.238-107
As prescribed in 538.273(d)(31), insert the following clause:
Export Traffic Release (Supplies) (MAY 2019)
Supplies ordered by GSA for export will not be shipped by the Contractor until shipping instructions are received from GSA. To obtain shipping instructions, the Contractor shall forward completed copies of GSA Form 1611, Application for Shipping Instructions and Notice of Availability, to the GSA office designated on the purchase order at least 15 days prior to the anticipated shipping date. Copies of GSA Form 1611 will be furnished to the Contractor with the purchase order. Failure to comply with this requirement could result in nonacceptance of the material by authorities at the port of exportation. When supplies for export are ordered by other Government agencies the Contractor should obtain shipping instructions from the ordering agency.
(End of clause)
48 C.F.R. §§552.238-107