MODTRS - TRANSIT CONTROLS USING ASYCUDA++ Ó UNCTAD – SITE (V1.15) 7.28 Declarants in MODBRK cannot capture Boxes C or D of the T1 as these boxes are only relevant to the Customs Office of Departure. Similarly, registration is a Customs’ function and is not available to Declarants using MODBRK. Figure 7.13: ‘Functions’, ‘T1’, ‘Departure office’, ‘Creation’, ‘Capture’. You can store or register the T1 on the server once the data has been checked. Registration of the T1 automatically generates an A++ Gate agent containing the T1 and sends it to the Office of Destination specified on the T1 (Office of Destination field). The T1 status is now  ‘REGISTERED’.