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Partner-agent endpoints and buyer task callback URLs must be directly reachable public HTTPS endpoints. If your URL already meets those requirements, no action is needed.

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Where this applies

  • Sellers: the endpoint URL when you register or update a partner agent.
  • Buyers: the callback URL you provide for asynchronous storefront task results.

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Requirements

Your URL must:
  1. Use https://.
  2. Resolve only to public IP addresses.
  3. Accept the webhook directly; redirects are not followed.
URLs that point to localhost, private or link-local networks, cloud metadata addresses, multicast ranges, or encoded numeric IP forms are rejected. A hostname that looks public is also rejected when DNS resolves it to any non-public address.

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What you will see

When a seller creates or updates a partner agent with an incompatible endpoint, the request returns a validation error. For buyer task callbacks, Interchange checks the destination again immediately before delivery; an unsafe or unresolvable destination is not called. Use a stable public DNS name or public IP address, terminate TLS at that destination, and configure the final callback URL rather than a redirecting link. Test the exact URL from a network outside your private environment before registering it.