# X_QUERY_UNREGISTERED

## Means

a query was projected before it was registered

## Typical cause

`.client()` / `.live()` on a read no `defineApi()` named

## Fix

list the query's module in `defineApi({ queries })` in `apps/<app>/api/index.ts` — the boot names it before serving reads

[Queries and live queries](/error-codes#queries-and-live-queries)