The Invalid Reply Event is triggered every time a user submits an invalid response to an input block — for example, an incorrectly formatted email or a number outside a defined range. It allows you to define a custom subflow that replaces the default “Invalid message. Please, try again.” behavior.

This is useful when you want to handle invalid inputs in a more conversational, branded, or dynamic way — such as providing specific guidance, logging the error, or redirecting users.

​
Supported inputs

This event is triggered by any input block that supports validation, including:

  • Email
  • Number
  • URL
  • Phone
  • Date / Time
    …

​
Variable mapping

  • Reply content: The content of the invalid reply.
  • Input type: The type of the current input. Can be text, number, email, url, date, time, phone, buttons, picture choice, payment, rating, file, cards.
  • Input name: The name of the current input. If a variable is attached to the input, it will be the name of the variable. Otherwise, it will be the title of the group.

These variables can help you customize messages based on what the user did wrong (e.g., “It looks like {{invalid value}} is not a valid email”).

​
Input blocks inside the event subflow

You can technically use input blocks inside the Invalid Reply Event subflow, but this is not recommended unless you plan to manually handle flow redirection using a Jump block.
If your subflow includes inputs but doesn’t use a Jump block, Typebot will still retry the original input block at the end — which could confuse users.

​
Return to main flow

By default, when an event is executed, the session will end and not return to the main flow. Use a Return block to return to the main flow. This allows you to have the flexibility to conditionally end the session.

​
Example use cases

  • Show a friendlier explanation of why the input is invalid (e.g., “Oops! That doesn’t look like a real email”).
  • Track how many invalid attempts a user makes with a variable and show a warning after 3 tries.
  • Redirect the user to a help flow if they keep entering invalid values.