Trying to append an event with wrong id results in UnknownError

[Imanghvs]

After calling appendToStream method with an id which is not a uuid, I get this error:

UnknownError: Could not recognize BadRequest

I was in situations where it took a long until I realized I was passing a wrong id through my app. I suggest having a validator on input, so we don't send such requests to EventStore at all (instead we can throw something like InvalidIdException.

I really like to make a PR for id validation, along with related tests if everyone agrees on such a fix.

[cdevarenne]

Hi @Imanghvs thank you for reporting this issue and agree with you to provide a better error. Please go ahead and submit a fix and we'll review it.

[Scalahansolo]

This is still a issue with the SDK here in 2025 : /

[w1am]

@Scalahansolo Can you explain the issue you're encountering? We're avoiding the use of validators because they hinder performance. If it's unrelated to this, please open a separate issue.

[Scalahansolo]

When first using the SDK, it's not clear at ask that this method requires a uuid, so I started off passing it a nano id.

If uuid is required, at the very least, the error message it spits out should say something about requiring uuids.

[w1am]

Thanks for describing your issue. I'll keep that in mind for the next release