Why is the deadline date changing on a Transit departure?

If a deadline was entered on a submitted transit departure (customs message E_DEC_DAT) which is amended by NCTS (customs message E_REL_TRA) then the data entered may have been invalid.

NCTS has specified:

If the deadline entered is too far ahead, the timer will automatically be reset.

The system will not allow the time frame to exceed 8 calendar days. A realistic time frame should be set as follows:

• From one UK port to another, the discharge date should not exceed 4 calendar days.
• To a non-UK port the discharge date should not exceed 8 calendar days.

If you have any specific queries, the NCTS helpdesk is available via: ncts.helpdesk@hmrc.gov.uk