No permission, please contact Zoom customer support. while trying to create user in a sub account

I created sub account using ISV account. Sub account creation was successful. When i am trying to create users in that sub account , i am getting “No permission, please contact Zoom customer support.” error.
APIs used…
POST https://api.zoom.us/v2/accounts

Create user in a sub account
POST https://api.zoom.us/v2/accounts//users
{
“action”: “custCreate”,
“user_info”: {
“email”: “random”,
“type”: 1,
“first_name”: “name”,
“last_name”: “name”
}
}
I tried with action “create” as well.Its giving same “No privilege.” message.

Hey @gera_vishal,

Can you share the sub account # so I can debug the issue?

Thanks,
Tommy