UAT Sandbox
The UAT Sandbox allows you to simulate end to end payment flows and test your integration thoroughly. It uses templates that map APIs to predefined sample responses, enabling you to simulate various scenarios such as payment Success, Failure, and Pending without real transactions.
Benefits of using the UAT Sandbox
- Even if the PhonePe UAT server is unavailable, the UAT Sandbox ensures a smooth testing experience. You can continue validating payment flows without disruptions.
- Simulate various payment outcomes such as success, failure, and pending states. This helps ensure your integration handles all real-world scenarios reliably.
- Thoroughly test the entire payment lifecycle from initiation to response. This ensures a stable and seamless experience when you move to production.
Steps for Custom Checkout Page
Follow the below steps to verify different payment methods on the Custom Checkout page.
Web-Based Flows
- Update the Host URL of Sandbox for PG PAY and PG Check Status API:
Host: https://api-preprod.phonepe.com/apis/pg-sandbox
Android/iOS Test App
Download and install the PhonePe Test app to verify the flows in UAT.
- Android – Download from here [Package Name: com.phonepe.simulator]
- iOS – Share the Email ID with the PhonePe Integration Team on the integration thread to send the invite via Firebase.
Untrusted Enterprise Developer in iOS
Since the release of iOS 9, testers will be required to “trust” your organization’s Apple Enterprise developer certificate, one-time, before running Beta distributions.
Testers will see the message “Untrusted Enterprise Developer” when running an app from an untrusted certificate and can trust it by following the steps outlined below on their device.
⚠️ Allow Developer Access to Proceed!
If you see “Untrusted Enterprise Developer”, follow these steps to trust the developer and continue with the installation.

- Navigate to Settings > General > VPN & Device Management.
- Select the developer under the “Developer App” section.
- Press “Trust [Developer]”.
- Select “Trust“.
Test App Setup
- Click on “Settings” and configure the “VPA for Collect” like @ybl that can be used for testing the UPI Collect Flow.
Once the collect request is raised, then click on “Fetch Collect” to see the collect request in the PhonePe Test app and click “Pay” to complete the transaction. - Click on “Test Case Templates” to configure the Success, Failure, or Pending templates to receive the response accordingly.
By default, the Success template will be set and you will always get the Success Response.

Configure Template
To configure the required template,
- Open the PhonePe Test App- Select the “Test Case Templates” button.
- Enter the “Merchant ID” and click “GET CONFIGURED TEMPLATES”
- Enter the “Merchant ID” and click “GET CONFIGURED TEMPLATES” to fetch the current templates if already set. Else, you will get “No Template Configured”
- For PG Integration – use the “Flow: B2B PG Payment Links” to configure the required template for Success, Failure, or Pending scenarios
Steps to Configure Template

Make sure to set the right templates for the Paylinks integration.
The templates of Custom Checkout integration starts with the KeyWord: “Paylink“
Templates for each type of Payment Method
For Default Success - "Default Paylink Success"Test Card Details
Credit Card
“card_number”: “4208585190116667”,
“card_type”: “CREDIT_CARD”,
“card_issuer”: “VISA”,
“expiry_month”: 06,
“expiry_year”: 2027,
“cvv”: “508”
Debit Card
“card_number”: “4242424242424242”,
“card_type”: “DEBIT_CARD”,
“card_issuer”: “VISA”,
“expiry_month”: 12,
“expiry_year”: 2023,
“cvv”: “936”
ℹ️ Simulation OTP
Use OTP 123456 on the bank page to complete the transaction simulation.
Test Net Banking Details
- Always use “bankId”: “SBIN” for testing purposes in the request payload of PAY API.
- Username: test
Password: test
and click “Submit” on the next screen.
ℹ️ Transaction Amount Limits for Testing!
For testing transactions, the lower amount limit is Rs.1 and the upper amount limit is Rs.1000. Please ensure your transaction requests stay within these limits.