# Topics failing validation after migration throw '422' error instead of "nice" message

**URL:** <https://meta.discourse.org/t/topics-failing-validation-after-migration-throw-422-error-instead-of-nice-message/89148>\
**Category:** Bug\
**Created:** [June 4, 2018, 10:18pm UTC](https://meta.discourse.org/t/topics-failing-validation-after-migration-throw-422-error-instead-of-nice-message/89148 "2018-06-04T22:18:23Z")\
**Posts on this page:** 1\
**Showing post:** 5

<div class="post-metadata">

**Author:** ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror)\
**Post date:** [June 5, 2018, 7:16am UTC](https://meta.discourse.org/t/topics-failing-validation-after-migration-throw-422-error-instead-of-nice-message/89148/5 "2018-06-05T07:16:01Z")

</div>

> [@jomaxro](#):
>
> If I modified the title and changed the category I received a 422 error, but this is not consistent with what I first saw.

So as suspected this has to do with category only edits triggering validation on the title. So only the topic owner, staff, or TL3 could really run into this.

---

_[View the full topic](https://meta.discourse.org/t/topics-failing-validation-after-migration-throw-422-error-instead-of-nice-message/89148)._