Invalid billing mode when updating subscription with scheduled change

{
  "error": {
    "type": "request_error",
    "code": "subscription_invalid_billing_mode_for_scheduled_change",
    "detail": "Subscription can only be updated with `do_not_bill`, `full_immediately`, or `prorated_immediately` as the `proration_billing_mode` because it has a scheduled change.",
    "documentation_url": "https://developer.paddle.com/errors/subscriptions/subscription_invalid_billing_mode_for_scheduled_change"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}

Details

Status code

400

Error code

subscription_invalid_billing_mode_for_scheduled_change

Error message

Subscription can only be updated with `do_not_bill`, `full_immediately`, or `prorated_immediately` as the `proration_billing_mode` because it has a scheduled change.

Common causes

• You're trying to update a subscription that has a scheduled change using a proration_billing_mode that bills on the next billing period, which isn't allowed.

Troubleshooting

• Use do_not_bill, full_immediately, or prorated_immediately for the proration_billing_mode.
• Remove the scheduled change to use any proration_billing_mode.