CB

If you create a field with a field name longer than 50 characters it's created properly with the field name cut to 50 characters, but during profile edit the field never stores. This is likely due to the tablename not being cut short. Add to the validation a fieldname length check so the field won't save with a name too long.

https://www.joomlapolis.com/forum/153-professional-member-support/233973-6048-what-is-the-maximum-lenght-of-a-custom-field-s-internal-name#282881