Issue sending messages to channels via certain Workflows

Summary

Issue sending messages to channels via certain Workflows

<p>We’re aware of an issue affecting Workflows that include 'refer to a message link'. Users with these workflows are unable to send a message to a channel, and will receive an ‘Input Validation Error’ when trying to perform this step. We’re actively investigating this issue and will provide an update in 30 minutes or sooner if more information becomes available.&nbsp;</p>

• Started

  Jul 24, 2026 · 1:22 AM

• Resolved

  Jul 24, 2026 · 3:47 AM

• Duration

  2h 24m

• Severity

  Minor

• ◐

  Investigating

  Jul 24 · 1:22 AM Slack

  <p>We’re aware of an issue affecting Workflows that include 'refer to a message link'. Users with these workflows are unable to send a message to a channel, and will receive an ‘Input Validation Error’ when trying to perform this step. We’re actively investigating this issue and will provide an update in 30 minutes or sooner if more information becomes available.&nbsp;</p>

• ✓

  Resolved

  Jul 24 · 3:47 AM Slack

  Incident resolved.