Catch-all

If the user types a response that does not match any of your questions, use a Catch-all to select which passage the chatbot should use to respond. There are a few specific scenarios you can configure separately:

• Catch-all for unexpected new users
• Catch-all for unexpected attachments
• Catch-all for long responses
• Catch-all within specific conversations
• Catch-all for specific languages

Catch-all settings are versioned: these changes are stored in the chatbot version, and will not be applied until they are published.

Catch-alls are configured in your chatbot's Fallback settings. To open the Fallbacks settings:

1. Select your team, and the chatbot you want to edit.
2. Open the Manage section of the left navigation and click Settings.
3. Click Fallbacks.

Catch-All - Unexpected Interaction From New User

Sometimes a new user may start an interaction with your chatbot in a way you didn't plan for. To make sure all new users receive the same welcome experience with your chatbot, you can configure a specific Catch-All passage for unexpected new users. This passage is sent when a chatbot receives an interaction from a new user that it hasn't sent the first passage to. 

Catch-All - Unexpected Attachments

You can configure a separate Catch-All passage to use if the user sends an unexpected attachment such as an image, sticker, or other file. For example, you may want to display a different message when the user sends an attachment, or use a script to interpret the sticker or file and direct the chatbot to another passage.

The same Unexpected Attachments Catch-All response is used in any conversation when a user uploads an unexpected attachment. This can't be set at a per-conversation level.

Catch-All - Long Text Inputs

Long replies from a user can be difficult to match to the correct question. Rather than using the standard Catch-All passage response, it can be helpful to guide the user to try a shorter reply.

If you want to treat replies over a certain length differently:

1. Turn this setting on.
2. Type the number of words the chatbot should consider to be a long reply.
3. Select which passage the chatbot should use to respond when the user types a long reply.
   A preview of the passage is displayed. You can also open the passage in a new tab.

The same Long Text Inputs Catch-All response is used in any conversation when a user sends a response longer than you specify. This can't be set at a per-conversation level.

Conversation Catch-All

You can specify a Catch-All response that is used only when the user is in a specific conversation flow. If the conversation Catch-All is enabled, it takes precedence over the chatbot's default Catch-All. You can specify a Conversation Catch-All for as many different conversations as you need to.

If the user types a response that does not match a question while they are within this conversation flow, select the passage the chatbot should use to respond.

If you set a Conversation Catch-All for a parent conversation, that Catch-All response does not apply to child conversations within the parent conversation. You must specify a Conversation Catch-All for any conversation where you do not want the default Catch-All used.

To set a Conversation Catch-All:

1. Make sure Conversation Catch-All is selected.
2. Select the conversation you want to specify a different Catch-All response for.
3. Select the passage to use as the Catch-All response.
   A preview of the passage is displayed. You can also open the passage in a new tab.
4. Click Save.

Because these settings impact individual conversations, per-conversation Catch-All updates are displayed in your version history as conversation changes. These changes will appear in the draft stage in Versions upon save.

Language-specific Catch-All

You can specify a Catch-All response that is sent when the user's response does not match any questions in your chatbot but does match a language supported in your NLP settings.

You don't need to specify the languages in a particular order; your chatbot's natural language processing AI will determine the best match from the languages in your NLP Settings. If you have a language configured in your NLP Settings that does not have a language-specific catch-all configured, then your normal conversation or default catch-all settings will be used instead.

To add a Language-specific Catch-all:

1. Make sure the language you want to add a catch-all for is configured in your NLP Settings.
   English is always configured by default in your NLP Settings.
2. In your Fallbacks Settings, make sure Language-Specific Catch-All is selected.
3. Click + Language.
4. Select the language you want to create a catch-all for.
5. Select the conversation and passage that should be sent when the chatbot detects that language but can't match it to an existing question.
   A preview of the passage is displayed. You can also open the passage in a new tab.

The same Language-specific Catch-All response is used for each specified language throughout your chatbot and cannot be configured per-conversation. If your chatbot user sends an extremely long message in a language that you have configured a catch-all for (other than English), the language-specific catch-all will be sent instead of the long-text catch-all.

You should create a separate passage for each language you specify, to give your chatbot user the best experience.