From the little information that is available, federal bank assigns a set number of seats to Jupiter to onboard new customers. Seats here means slots. Once those slots are taken up and all new accounts have been onboarded, anyone Trying to open an account after that gets the seats taken error. Reporting this error to the customer support ensures that the customer support is able to add you to the list of people who need to be allocated a slot to open the account and as soon as the new slots are made available by federal bank, they reach out to you to ensure that your account is opened