Debug a workflow

Every workflow keeps a log of every contact that entered, which steps they hit, and what happened at each one. When something misfires, the log is always step one.

1. 1
   Open the workflow → Execution log

   Filter by contact, date, or status.
2. 2
   Click a contact row

   Expand to see every step they traversed and the data at each one.
3. 3
   Find the red step

   Failed steps are red. Hover for the error.
4. 4
   Fix and retry

   Most failures are missing custom fields or a bad merge token. Fix the template and optionally re-run for that contact.