Checklist

GetPortBroadcastReceiver exists, in the root package, manifest-declared, exported

<queries> declares the payment app

Response handling lives at application scope, not in an Activity

A result arriving with no listener attached is held, not dropped

Amounts are sent in minor units

Pre-auth ceiling is a parameter, not a constant, and enforces SAR 300

The scheme from the pre-auth response selects capture and void variants — Visa is not mada

Visa partial settlement uses Partial Reversal (27), not Capture

Void on Visa/Mastercard uses Reversal (9), not Pre Auth Void (6)

rrn, approvalCode and transactionDate are written durably before the nozzle is released

Open pre-authorisations are recovered and resolved after a restart

The 120 s unknown timeout voids and flags suspect

060 and 061 are treated as approvals

A declined pre-auth physically prevents the nozzle being picked up

Screen copy matches the certified wording in both languages

The amount is shown at every step, and the remaining-amount note appears before and after

Amount validation happens before the pre-auth, not as a decline

Capture sends the delivered amount, not the authorised one

Capture type field is 1 — partial capture is withdrawn

Print flag is 0 — the terminal has no printer, the receipt is the QR