keytool error :java.io.IoException:Incorrect AVA format

Question

I am new to Android development; when I have been trying to sign the application I have got the following error. Can anyone help me on this issue?

keytool error          


        

Answer 1

Probably you entered illegal character(something like,(comma)) in a field for Name, Organization or somewhere else.

Of course, if you really want some character can be escaped with \ sign

"+" (plus sign) sign also causes this issue. (People often tend to use + sign for the country code field)