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Every environment has its own context
Configure the API base URL, key and webhook receiver as a set. A transaction belongs to the Tenant and environment resolved from its credential. An identifier valid in another environment does not grant access and may return 404.
KYC_API_BASE_URL=https://api.example.invalid
KYC_API_KEY=REPLACE_ON_YOUR_SERVER
KYC_WEBHOOK_SECRET=REPLACE_ON_YOUR_SERVERThese values are placeholders. An example URL does not prove that a service is active. Confirm official addresses and access during integration enablement.
Separate your own systems too
Use independent configuration for databases, queues and callbacks. Include the environment in your local transaction association key. A test routine must never activate credit, release an account or change real agreements.
Use synthetic data for contract tests. When acceptance requires a real journey, agree on purpose, access and data handling with the operation’s owners. Do not send personal documents to the public simulator: it uses only fixed scenarios in the browser.
Before switching environments
Confirm credentials, download permissions, callback configuration, HMAC secret and continuation rules. Check authorized IPs and URLs as well. Repeat rejection, expiration and reconciliation tests; a successful connection does not replace functional acceptance. Follow the go-live checklist.