Revision 1.17 of the Transit Web Services guide for information exchange between Operators and Customs in the new NCTS6 System (New Computerized Transit System Phase 6) is published. This guide contains the external domain messages (communication between the Economic Operator and the Tax Agency) of the national component of the Automated Transit Declaration System (NCTS6), as well as any necessary adjustments to improve the National Transit Systems in line with the Union Customs Code (UCC).

In this new revision, apart from changes to certain rules, the main changes explained are those resulting from the adaptation of the transit declaration to the EU-UK Agreement concerning Gibraltar made public on February 26, 2026.