# hooks-field-del-buf-len

Erasing a field from STObject by calling [sto_erase](https://xrpl-hooks.readme.io/v2.0/reference/sto_erase) requires enough space to serialize the new STObject into; the API also limits size of the old object.

This check warns about insufficient output buffer space as well as too-large value of the input STObject in calls to `sto_erase` (if they're specified by constants - variable parameters are ignored).

[Read more](https://xrpl-hooks.readme.io/v2.0/docs/serialized-objects)