Sandbox Credentials/Test Information
Item Value / Owner
Merchant ID Provided by Miiisys (assigned by support)
API Key Provided by Miiisys (used for API/Webhook authentication)
IP Address (Whitelist) Provided by the merchant; not required in Sandbox
URL to receive alert (Webhook) Provided by the merchant — HTTPS to receive alert notifications
Notes
Merchant ID and Key are issued together when your sandbox account is created.
The webhook URL should be HTTPS and stable; consider protecting it with a long-lived bearer token or HMAC signature.
The IP whitelist is typically required only for Production.
Example
Merchant ID: 10000
API Key: <sandbox_key>
URL to receive alert: https://merchant.example.com/webhooks/alerts
support@miiisys.com
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