# X_CATALOG_SLOT_MISMATCH

## Means

two locales define one key with different interpolation slots

## Typical cause

a translation added or dropped a slot: the two values interpolate different sets of names, so one locale renders a placeholder the other never had. The sets are compared by name, and their order does not matter

## Fix

`x i18n check --json` — the finding names the locale, the key and the slots that differ

[i18n, money, time](/error-codes#i18n-money-time)