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UNRESOLVABLE_SCHEDULE

UNRESOLVABLE_SCHEDULE is a structural error: a gantt schedule cannot be resolved to concrete dates, so bars cannot be positioned.

What triggers it. A task whose after/until expression references a task id that does not exist, or a start/end that cannot be parsed against the declared dateFormat. The warning carries the engine reason string.

How to fix it. Point the reference at a real task id or give the task explicit dates with the set_task_dates mutation (or edit the offending source line named in the reason).

See it fire

This minimal source triggers UNRESOLVABLE_SCHEDULE — checked at build time against the same engine the editor runs.

gantt
  title Release
  dateFormat YYYY-MM-DD
  section Build
    Ship :ship, after review, 3d

Open in the editor and watch it clear

Run am verify diagram.mmd --json, inspect this code, and apply the smallest source or typed mutation that clears it. If it persists after two mechanical attempts, return the warning and ask for human review.

In the cloned repo, am is bun run bin/am.ts.

Back to all warning codes, or open the editor to watch this warning clear as you edit.