Telegram Bot Inline Buttons: Check Permissions and Reject Stale Actions [cross-post]

Developers building Telegram Bot API integrations must implement strict validation for CRM updates. For inline buttons, systems should use callback_data to look up server-side records and verify sender permissions, button expiry, and enquiry versions to prevent stale actions. Additionally, for webhooks, the X-Telegram-Bot-Api-Secret-Token must be validated before queuing any business events or creating leads. While a matching secret ensures request authenticity, it does not establish user permissions or prevent repeated delivery of the same event.