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Designing an RCTI Workflow: Validation, Money, Snapshots, and PDFs

An invoice form looks simple until the software has to preserve what was true when the document was issued. That problem is especially visible with an Australian recipient-created tax invoice (RCTI). Unlike an ordinary supplier invoice, an RCTI is issued by the recipient of the supply. The workflow also depends on conditions outside the PDF itself, including the parties' GST status and an…

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Dev Collective

I'd like to find a group, ideally on Slack, where serious devs work semi-together on side-projects. They use the same AI Agents, MCPs, and similar tech stacks.

If-Match: two curls, one 412

Two tabs save the same note. Last write wins. The first tab's words vanish. Two terminals on your laptop are two tabs. You GET. You type. You PUT. Save this as if-match-server.mjs .

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