Hi
when I want to save a new Item on K2 , If faced this problem (www.wallex.ir/problem.png)
some categories is OK and Item correctly save and some of them is not OK and I see this error
please help me...

Hi,
This warning box is related with a group of extrafields, attached to a K2 item through a K2 category, that is required to have a value before saving the K2 item.

Hello,

This has been resolved with:
github.com/getk2/k2/commit/6cff7526e292321479113783d5d2ea80ae7752a1