Which errors to ignore?

I’m new to Sentry, currently integrating it into my node.js backend.
Whenever a user tries to create a resource, I obviously validate it, before adding it to the database.
If the schema is invalid, i throw a 400 exception with a custom error class, Sentry logs this error.
The error was (most likely) caused by a client, so should I just ignore it, or is it better to log it anyways.
I’m wondering what kind of errors are commonly ignored or rather, how you handle errors, when is (most likely) isn’t the code’s fault for failing.

Thank you.