Checkout: Display informational inline message instead of blocking error?

Topic summary

A developer is seeking a way to display non-blocking informational messages during checkout, similar to Shopify’s native zip code correction suggestions.

Current Implementation:

  • Using a Shopify Function with a UI extension
  • Can display messages targeting the address1 field
  • Messages currently block checkout progress (preventing customers from continuing)

Desired Outcome:

  • Display informational messages that don’t prevent checkout completion
  • Achieve the same user experience as Shopify’s built-in suggestion system

Visual Reference:
An attached screenshot demonstrates the current “Function Error Message” that blocks progress, contrasting with the desired non-blocking suggestion style.

Status: The question remains unanswered, with no solutions or workarounds provided yet.

Summarized with AI on October 30. AI used: claude-sonnet-4-5-20250929.

Through a ui-extension or shopify function if its possible to display a non-blocking message like how shopify will suggest a zip code correction here? I’m using a shopify function currently and can display this message “Function Error Message” to the address1 target, but it blocks checkout progress.