Please provide steps to reproduce the error.
* Go to Special:RequestCustomDomain
* type in br3xawikiwiki for the target database name
*admire the error
**What happened that shouldn't have?**
says "The provided target is not a valid database name."
**What should have happened?**
it should have accepted my request.
**Provide a link to Special:Version for the site you're experiencing this on.**
https://meta.wikioasis.org/wiki/Special:Version