# X_APPROXIMATE_COUNT_FILTERED

## Means

an estimate was asked of a filtered chain

## Typical cause

`approximateCount()` reads `reltuples` out of `pg_class`, which knows nothing about a predicate, so `posts.where({ orgId }).approximateCount()` would answer for the whole TABLE while reading as "roughly how many of mine". Refused rather than answered, because the wrong answer is plausible and unbounded

## Fix

`<entity>.count()` — the exact answer for a filtered chain. `approximateCount()` answers for the whole table only

[Policy and authz](/error-codes#policy-and-authz)