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WhatsApp automations now fail locally when they attempt to send a free-form message after the 24-hour customer service window has closed. This avoids sending an invalid template request to Meta and gives users a clear, actionable error instead of “Template not found or invalid template name.” Template messages continue to be sent whenever template parameters are present. Free-form messages continue to be sent normally while the conversation is replyable. Fixes https://linear.app/chatwoot/issue/PLA-183/prevent-whatsapp-automations-outside-the-24-hour-window-from-producing ### How to reproduce 1. Create a WhatsApp automation that sends a message without template parameters. 2. Trigger it on a conversation whose 24-hour customer service window is closed. 3. Observe that the message previously reached the template send path and failed with a misleading provider error. ### How to test 1. Trigger an automation with template parameters and confirm it sends as a template message. 2. Trigger an automation without template parameters inside the 24-hour window and confirm it sends as a free-form message. 3. Trigger an automation without template parameters outside the 24-hour window and confirm it fails locally with a clear error and makes no request to Meta. ### Things to know This changes only the invalid closed-window, no-template path. Existing template and in-window message behavior remains unchanged. --------- Co-authored-by: Muhsin <12408980+muhsin-k@users.noreply.github.com>