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Farhat Ullah.
Writing

Notes from production.

ERP integrations, ZATCA compliance, AI systems, and what breaks when you ship for real clients.

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4 min read

Why your DHL plugin fails in the Czech Republic

Off-the-shelf DHL shipping connectors are built against DHL's general API. DHL's Czech Republic operation runs a local variant that most connectors don't cover — and the failure doesn't show up until a shipment is already at the border.

Published
02 Jul 2026
  • Odoo
  • e-commerce
  • logistics
5 min read

Four things I find in every AI-generated backend

AI coding tools produce backends that run, pass a demo, and look production-ready. In security review after security review, the same four classes of finding keep showing up underneath that surface.

Published
11 Jun 2026
  • security
  • AI
  • backend
4 min read

ZATCA clearance vs. reporting: the distinction most Odoo setups get wrong

Clearance and reporting are not two names for the same ZATCA Phase 2 workflow. They're two different processes with different timing, different invoice types, and different failure modes — and conflating them is the most common reason e-invoicing integrations misfire.

Published
14 May 2026
  • ZATCA
  • Odoo
  • e-invoicing
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