Recent changes to 334: Mailmark 2D postcode format.

#334 Mailmark 2D postcode format.

Git Lost — Fri, 20 Mar 2026 14:46:55 -0000

status: open --> closed

#334 Mailmark 2D postcode format.

Git Lost — Tue, 08 Apr 2025 23:22:16 -0000

Thanks Milton, hopefully commit [182c84] has addressed this. There's a later document available at https://www.royalmail.com/sites/royalmail.com/files/2024-12/Mailmark-Barcode-definition-document-181224-v1_5-final.pdf, but it doesn't change the DPS/RTS stuff, all the best, Martin

Mailmark 2D postcode format.

Milton Neal — Tue, 08 Apr 2025 03:46:41 -0000

Looking at the code for generating Mailmark 2D barcodes, the Destination post code + Destination Point format checking uses the same peice code as for Mailmark 4 state(CL) check. According to to https://www.royalmailwholesale.com/mint-project/uploads/337237901.pdf
Mailmark 2D uses different post code formats, and also appears not to used the reduced alpha set
(–C,I,K,M,O or V). Also according to this document, the Return To Sender post code only 7 characters, ie no DPS. The Zint code adds a dummy DPS then varifies it with the same code as for Mailmark 4 state(CL). The above document is dated 25/09/2020, so its reasonably recent, or is there another document I should be referencing?

Mailmark 2D postcode format.

Milton Neal — Tue, 08 Apr 2025 03:46:41 -0000

Ticket 334 has been modified: Mailmark 2D postcode format.
Edited By: Git Lost (gitlost)
Status updated: 'open' => 'closed'