Create Batch

[ { "from": "+12015023226", "to": "+1111111111", "agent_id": "agent_123", "workspace_id": "workspace_456", "metadata": {"X-Customer-ID": "customer-001", "X-Campaign": "promotion-a"} }, { "from": "+12015023226", "to": "+2222222222", "agent_id": "agent_123", "workspace_id": "workspace_456", "metadata": {"X-Customer-ID": "customer-002", "X-Campaign": "promotion-b"} } ]
Batch Limit: Maximum 100 calls per batch
Optional Fields: agent_id, workspace_id, and metadata can be included for tracking
SIP Headers: All string values in the metadata object are passed as SIP headers