Issue symptoms

When I publish my dialogue flow in the Advanced AI agents dashboard, I get an error message.

Resolution steps

The dialogue flow builder shows an error message if there is an issue with the logic of your flow setup. You may encounter one of the following error messages:

  • This message leads into an infinite bot message loop
  • Conditions repeat a valueless operator
  • Conditions contain mixed types

This message leads into an infinite bot message loop

Infinite bot error message

Include a visitor message in the loop when you link back from a bot reply to an earlier block in the dialogue. This error is visible if there are no visitor message blocks between the linked bot message and the conditional blocks.

Conditions repeat a valueless operator

conditions repeat error message

Remove one of the conditions that repeat in your conditional logic.

Use a segment to group related values and simplify logic. Apply "match ALL", "match ANY", or "match NONE" to avoid repetition.

Conditions contain mixed types

mixed types error message

Multiple conditions can't be true at the same time. Make all your conditions mutually exclusive. Use a segment to ensure conditions are grouped consistently. Select "match ALL" or "match ANY" to align evaluation types.

At the parent level of a conditional block, you can choose between parameters or segments. Segments allow you to check multiple values at once and can simplify complex or conflicting logic. For more information, see Creating and managing use cases for zero-training AI agents.

Note: As of May 11, 2026, Zendesk transitioned all customers to a single AI agent offering and removed the distinction between Essential and Advanced plans, which were formerly Ultimate plans. For more information, see Getting started with AI agents and Migrating to the new AI agents experience.
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