45350: An unexpected error occurred.

This error indicates that Flex could not complete the request because an unexpected internal failure occurred while processing it. In Flex Conversations, interaction channel creation is asynchronous, so a request can be accepted first and still fail while Flex creates or configures the underlying channel.

• A temporary internal Flex service failure interrupted request processing.
• The request was accepted, but the asynchronous channel setup did not finish successfully.
• A downstream conversation or participant operation failed while Flex was creating or configuring the channel.

• Retry the request.
• If you are creating an interaction, do not rely only on the initial POST /Interactions response. Fetch the interaction or channel state after the request completes to confirm that setup succeeded.
• Listen for task.canceled events so you can detect interaction channel creation failures in your application flow.
• Review the Twilio Console Debugger or Flex error logs to capture more detail about the failing request.
• If the issue continues, check the Twilio status page and then contact support through the Help Center with details about the failing requests.

• Interactions API
• Best Practices for Flex Conversations
• Error Handling and Debugging