UPI Testing
Save your workspace key — shown once.

RNH5-2CSB-V8QD-9VN2

Why it matters
It is the only way to reach these profiles and results from another device. The lab stores a hash of it, so nobody here can recover it for you.

Paytm

PT-007 Not applicable here

Paytm — Minimum amount

No mam set, so this is the same payload as the plain control.
Why
Profile P07 is defined by mam, and neither your UPI profile nor this run supplies one — so comparing P07 against P01 would be comparing a method against itself and reading the noise as a finding. Set mam on the profile first, or run P01 and know what you measured.
pa — A payment needs a payee address. Nothing can be launched without pa.
You are on a desktop browser, which has no UPI app to open. The URI is still shown and can be copied.
What would unblock it
Open this page on the phone you want to test, or use a QR-scan method (QR group) which is designed for exactly this situation.
Test PT-007

Scan with the phone you want to test.

Advanced details
paytmmp://pay?pa=&tr=LAB1ZN0M5N486C5&am=2.00&cu=INR
Launch
app scheme
Scheme
intent:// (Android) · paytmmp://pay (iOS)
Profile
P07 — P01 + mam
Platform
Android + iOS
Browser
Android: Chrome or any browser that follows intent: URIs. iOS: Safari, only where the app registers a scheme.
Docs
No public third-party deep-link specification. Paytm publishes a merchant payment gateway with issued credentials. (observed)
Reference
LAB1ZN0M5N486C5
Registry
1.0.0

mam constrains an amount the payer may edit. Beside a fixed am it is contradictory, and WHICH ONE each app honours is the finding. The lab warns about the contradiction and sends it anyway — that is the experiment.

Expected

Paytm opens on its payment confirmation screen showing the payee and ₹2.00. mam constrains an amount the payer may edit. Beside a fixed am it is contradictory, and WHICH ONE each app honours is the finding. The lab warns about the contradiction and sends it anyway — that is the experiment.

Limitations

  • A browser cannot tell you whether an app is installed. "App did not open" and "app is not installed" look identical from here; AN-004 in the Android harness is what separates them.
  • The iOS scheme used here is observed, not vendor-documented. A working result is evidence, not a supported integration.

Prerequisites

  • A saved UPI profile with a payee address.
  • On iOS: Paytm installed and registered for paytmmp://pay
  • On Android: Paytm installed (net.one97.paytm).

Notes

  • This scheme is observed, not vendor-documented. A result either way is evidence about today, not a supported integration.

How the lab runs it

Android: an intent:// URI naming net.one97.paytm, with no browser_fallback_url so a failure to open stays visible. iOS: the paytmmp://pay scheme carrying the same query.