When updating a plan, you have two options on how to reflect the changes to the plan to associated subscriptions, this is defined in the
processingInformation.subscriptionBillingOptions.applyTo
 field. Possible values:
  • ALL
    : change is applied to all subscriptions (existing and new).
  • NEW
    (default): change is applied to new subscriptions only.
Changes can also be made at the individual subscription level. See Amend a Subscription.
For a draft plan, you can amend all plans information.
For an active plan, you can amend only the information in these fields:
  • planInformation.billingPeriod
  • planInformation.billingCycles
  • orderInformation.amountDetails.currency
IMPORTANT
For an inactive plan, you cannot amend any information. To make changes, move the plan to active or draft.