This task topic explains how to update a rate plan in a subscription using the REST API by creating an order.

1. Determine the values of the following variables:

   Variable	Description
   $SubscriptionNum	The number of the subscription to update. For example, A-S00000001. To create the order under a new account instead of an existing account, specify the newAccount field instead of the existingAccountNumber field.
   $AccountNum	The number of the account that will own the order. For example, A00000001.
   $RPId	The ID of the rate plan to update in the subscription. For example, 2c92c0f85d7d53d3015dac494dfc5cbf.
   $ChargeNum	The number of the charge to update in the rate plan. For example, C-00000020.
   $Today	Today's date. For example, 2017-09-30.

2. Use the Create an order operation to create an order under an existing account: To preview invoices for the updated subscription, use the Preview order operation.

   Request

   POST /v1/orders/

   Request Body

   { "orderDate": "$Today", "existingAccountNumber": "$AccountNum", "subscriptions": [ { "subscriptionNumber": "$SubscriptionNum", "orderActions": [ { "type": "UpdateProduct", "triggerDates": [ { "name": "ContractEffective", "triggerDate": $Today }, { "name": "ServiceActivation", "triggerDate": $Today }, { "name": "CustomerAcceptance", "triggerDate": "$Today" } ], "updateProduct": { "ratePlanId": "$RPId", "chargeUpdates": [ { "chargeNumber": "$ChargeNum", "pricing": { "recurringVolume": { "quantity": 50 } } } ] } } ] } ], "processingOptions": { "runBilling": false, "collectPayment": false } }