constraint = "no negative" shows (English) error : "Only positive number or zero is allowed" is OK but Turkish translation is wrong : "Sadece pozitif olmayan sayı girilebilir".

It means : "Only non-positive number is allowed". (which means as the same as NO_POSITIVE)

NO_NEGATIVE Turkish message should be something like : "Sadece negatif olmayan sayı girilebilir" (means : Only non-negative number is allowed)