90012: 'Recipients' list has too many items [deprecated]

This deprecated error occurs when you submit a Broadcast request with more recipients than the request allows. For current bulk messaging workflows, Twilio accepts up to 10,000 recipients in a single request through the to array.

• You provided too many recipients for a single Broadcast request.
• Your application tried to send one bulk request instead of partitioning the audience into smaller recipient groups.
• If you are using the current Bulk Messaging API, the to array contains more than 10,000 recipients.

• Split the recipient list into smaller Broadcast requests, or break a bulk send into multiple requests with fewer recipients.
• If you use the Bulk Messaging API, keep the to array at 10,000 recipients or fewer in each request.
• After you resend a smaller batch, use the operationId from the response to track progress with the Operation resource.

• Getting started with Twilio Bulk Messaging
• Bulk Messaging troubleshooting
• Notify: Multi-Channel Notifications