Specifics of managing postpaid subscriptions

The Postpay model means that a customer pays in the next billing period, after using a service.

Postpaid subscriptions start provisioning immediately after the order confirmation. Postpaid subscriptions do not depend on the account balance and instead have individual values of the current consumption (a debt) and consumption limit (see Viewing and updating subscription's details). However, postpaid subscriptions can be paid from the account balance automatically and manually (see Paying for the subscriptions that are linked to the invoice for the Postpay charging model).

The current debt is calculated depending on the billing type (see Charges for the subscriptions with different billing types) as follows:

For the CSP monthly, Monthly Commitment, and Pay as you go (external) billing types, the current debt equals the total amount of charges in the Blocked and New statuses of a subscription only for the current billing period.
For other billing types, the current debt equals the total amount of all charges in the Blocked and New statuses of a subscription.

When a manager creates an order for a postpaid subscription, it may be possible to increase the quantity of resources. It may cause unwanted debt for this subscription of an account. To prevent this situation, the platform checks the subscription credit limit. As a result, confirmation of an order is available only in the cases listed in the table below (for order types, see Managing an order).

Order type	Conditions that allow confirming an order with the subscription credit limit
Sales order	The total amount of the order does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level. The monthly payment for the subscription does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level.
Prolong order	The total amount of the order does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level. For the CSP monthly and Monthly Commitment billing types: If an order is created before the Paid to date — the amount of charges for the next billing period does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level. If an order is created after the Paid to date — the amount of charges for the current billing period does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level.
Renewal order	The total amount of the order does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level. For the CSP monthly and Monthly Commitment billing types: If an order is created before the subscription expiration date — the amounts of charges for the current and next billing period separately do not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level. If an order is created after the beginning of the next billing period — the amount of charges for the current billing period does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level.
Change order	The amount of all charges created for the subscription at the current billing period, including the charges for the new order, does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level. For the CSP monthly and Monthly Commitment billing types, if an order is created after completing a prolong or renewal order — the amounts of charges for the current and next billing period separately do not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level.
Switch plan order	The amount of all charges created for the subscription at the current billing period, including the charges for the new order, does not exceed the subscription credit limit defined in the account class or redefined on the account or subscription level

Managing postpaid subscriptions has the following specifics: