54051: Invalid webhook URL

Twilio returns this error when you set the WebhookUrl for a Sync Service to a value that is not a valid URI or is longer than 512 characters. Sync uses this URL when Sync objects are manipulated, and you can also enable webhook delivery for REST API-triggered events with webhooks_from_rest_enabled.

• The WebhookUrl value is not a correctly formatted absolute URL. The Sync Service resource expects a string<uri> value for this parameter.
• You sent the request as application/x-www-form-urlencoded and did not percent-encode the WebhookUrl value correctly.
• The WebhookUrl value is longer than 512 characters.
• You supplied a relative or incomplete URL instead of a fully qualified webhook endpoint. Twilio examples use absolute webhook URLs such as https://example.com/sync.

• Set WebhookUrl to a fully qualified http:// or https:// URL that Twilio can call for Sync webhook events.
• If you build the HTTP request yourself, percent-encode the WebhookUrl value in the application/x-www-form-urlencoded request body before you send it.
• Keep the WebhookUrl value at 512 characters or fewer.
• Create or update the Sync Service with a valid WebhookUrl first, then enable webhooks_from_rest_enabled if you want Sync to send webhooks for REST API-initiated changes.

• Service Resource
• Sync Webhooks
• Getting Started with Twilio Webhooks