A new version 1.9 of the technical guide has been published G4 for the declaration of temporary storage of goods.

The main change is the modification of section "2.4.5.1.Calculated customs situation" and the inclusion of a new type of document 1237 - "Other situations involving third-party goods in regular line", which will allow in the G4 linked to regular line transports to prevent, despite not having prior digital documents that justify that the goods are not community, the calculation of the customs situation from being set at the "T1" value taking into account cases such as those that occur in certain postal shipments (UPU).

IMPORTANT NOTES ON THE CLOSURE OF AIR DSDTs

Please note that on March 9, 2026, at 9:00 a.m., the possibility of registering new DSDT headers (means of transport) in airfields will close with the message EDIFACT MANREP . EDIFACT MANREP messages will continue to be allowed/ MANCAR for modifications, activations, cancellations and header deletions and for additions, modifications, location changes ( CUB ), cancellations and deletions of items in headers already declared, on the existing items in DSDT , as well as the reference and dates of DSDTs already declared from any subsequent customs declaration.

Goods transported by new means after that date and time at air customs must be declared with the messages G3v2 , G4 , G5v2 and ATMNot defined in their technical guides, and therefore must be properly referenced and dated in subsequent customs declarations that establish their customs destination.

The t has been updatedEDIFACT error code chart with codes 94 and 95. From the closing date and time onwards, all DSDT header registrations sent via EDIFACT with the MANREP message will give error 94 with associated text "DSDT header registrations (MANREP function 47) closed for air customs areas."

Also, from that date and time, transits will be prevented from automatically generating DSDTs in non-maritime premises (air, road and rail), leaving only the option of automatic G4 generation at the transit reception customs.

As previously reported, all economic operators declaring any customs declaration subsequent to the DSDT or G4 that dates these temporary storage declarations are urged to adapt their computer systems as soon as possible to support the previous document N337 (or similar) that allows the dating of both DSDTs and G4s, ceasing to use XSUM, XSUA and 337. It is expected that in the coming weeks, even before the March 9th closing date, the volume of G4 in air terminals will increase considerably.

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