91004: Test event cannot be found

This error occurs when you try to validate an Event Streams sink with a testId that Twilio cannot match to a previously created sink test event. Create the test event with the Sink Test resource before you submit its ID to the Sink Validate resource.

• You called the Sink Validate resource before creating a test event for the sink.
• The testId you submitted does not match the test event generated for the sink you are validating.
• You used a different value instead of the test event ID from the request body sent to your webhook endpoint during sink validation.

• Create a test event for the sink before you call the Sink Validate resource.
• If you validate a webhook sink connection, read the request body sent to your endpoint and submit the test event ID returned in that test event.
• Confirm that the testId belongs to the same sink you are validating and that you copied it exactly.
• For new integrations, skip sink validation unless you need it for an existing workflow. Sinks are active by default, but the validation endpoint still expects a valid testId if you call it.

• Event Streams overview
• Sink Test resource
• Sink Validate resource