Thanks for response.
I just uploaded a package in beta channel and after static analysis I get to know that there is an error that says
"According to the Monetization channel properties page, your channel is offering in-channel purchases, but no Roku Pay BrightScript code was found in your channel."
how can that be solved?
I have copied code from rokudev github that is in this app. and while sideloading channel i can perform purchase using test user account.