Error 310012 "The inbox valid content is not found" when downloading Contact Center voicemail

API and Webhooks
1

Hi,

I’m trying to download voicemail audio and transcripts from Zoom Contact Center using the API, but I’m getting error 310012 even after receiving the voicemail_transcript_completed webhook.

Setup:

  • OAuth app with scopes: contact_center:read:inbox_messages:admin, contact_center_recording:read:admin
  • Webhook events subscribed: contact_center.inbox_message_received, contact_center.voicemail_transcript_completed

Flow:

  1. I receive the inbox_message_received webhook with message_id
  2. I receive the voicemail_transcript_completed webhook with transcript_url
  3. I can successfully fetch message metadata via GET contact_center inboxes {inboxId} messages {messageId} - response includes download_url and transcript_url
  4. When I try to download the content using either URL, I get error 310012

Error Response:
code: 310012
message: The inbox valid content is not found
HTTP Status: 400

What I’ve tried:

  • Using different domains
  • Waiting several minutes after the voicemail_transcript_completed event
  • Adding message:read:content:admin scope
  • Testing with multiple voicemails

Questions:

  1. What scope is required to download inbox message content?
  2. Is there a specific setting in Contact Center admin that needs to be enabled for content storage?
  3. Is error 310012 documented anywhere?

Thanks for any help!