35125: Maximum limit reached in the account for scheduling messages

This error occurs when you try to create another scheduled message after your Account or Subaccount has reached Twilio's limit for scheduled messages. Twilio supports up to 1,000,000 scheduled messages at one time for each Account or Subaccount, and a Subaccount's limit does not consume the parent Account's allocation.

• Your Account or Subaccount already has the maximum number of messages in scheduled status.
• Previously scheduled messages have not yet reached their SendAt time, so they are still counted against the scheduling limit.
• Messages you no longer need were not canceled, so they are still using scheduled-message capacity.

• Wait for existing scheduled messages to be sent. When scheduled messages are sent, capacity becomes available for new scheduling requests.
• Cancel scheduled messages you no longer need by updating the Message resource and setting Status to canceled.
• If you manage separate workloads with Subaccounts, schedule those messages in the appropriate Subaccount because each Subaccount has its own allocation.

• Message Scheduling
• Message resource API reference
• Messaging Services