# hooks-slot-sub-limit

Hook APIs [slot_subarray](https://xrpl-hooks.readme.io/v2.0/reference/slot_subarray) and [slot_subfield](https://xrpl-hooks.readme.io/v2.0/reference/slot_subfield) take parameters specifying parent and child slot numbers. Values of these parameters are limited, and the functions fail if the limit is exceeded.

This check warns about too-large values of the slot numbers (if they're specified by a constant - variable parameters are ignored).

[Read more](https://xrpl-hooks.readme.io/v2.0/docs/slots-and-keylets)