This phase is where full validation of your integration takes place. Using the UAT environment, you will run end-to-end tests to confirm that your client is functioning correctly, the API responses are being handled properly, and that the expected data flows are occurring.

UAT Checklist

Use the checklist below to guide and complete your UAT testing:

Authentication & Connectivity

• Confirm the correct API token is present in the Authorization field of each request header

• Verify successful connection to the UAT base URLs for each integrated product

Endpoint Functionality

• Validate the request payload structures and required fields for each endpoint

• Review API responses for expected data and formats

• Call each required API endpoint and confirm valid responses

Error Handling

• Intentionally trigger and handle common error codes

• Ensure retry logic is in place for failures or network issues

Business Logic & Data Flow

• Simulate end-to-end transaction flows using realistic test data

• Validate business logic is applied based on API responses

Logging & Monitoring

• Confirm that all API requests and responses are logged for auditing and troubleshooting

• Monitor system behavior for timeouts, latency, or unexpected values