Why am I unable to dial numbers like *222#?

[AC Question]

I am unable to dial numbers like *222#

It says " dualnumber service not available in international roaming area "
It appeared after I upgraded to lollipop. What should I do

 

[Javier P]

Re: I am unable to dial numbers like *222#

Which phone do you have? Is it a dual SIM? Does that error happen just when roaming? That number is used to check your credits and stuff like that.