# Update next billing date for a subscription contract

Reschedules the next billing date for an active subscription contract. This endpoint allows you to change when the next order will be created and processed.

Key Features:
- Updates the next billing date to the specified date
- Optionally reschedules all future orders based on the new date
- Syncs the updated date to Shopify
- Sends confirmation email to customer

The rescheduleFutureOrder Parameter:
- true (default): Updates the next billing date AND recalculates all future queued orders based on the new date. Use this to shift the entire billing schedule.
- false: Only updates the next billing date. Other queued orders remain unchanged. Use this for one-time date adjustments.

Important Notes:
- The new date must be in the future (with 10 minute grace period)
- Date is validated against the shop's timezone
- If anchor days are configured, future orders may align to those anchors

Process Flow:
1. Validates the contract exists and belongs to the shop
2. Validates the new date is not in the past
3. Updates the billing attempt to the new date
4. Syncs the updated nextBillingDate to Shopify
5. If rescheduleFutureOrder=true, regenerates the queue from the new date
6. Sends confirmation email to customer
7. Records activity log entry

Date Format:
- Must be ISO 8601 format with timezone
- Examples: 2024-03-15T12:00:00Z, 2024-03-15T12:00:00+05:30
- URL encode the date when passing as query parameter

Timezone Handling:
- The provided date is used as-is for the billing attempt
- Validation (past date check) uses the shop's configured timezone
- All dates in the response are in UTC (Z suffix)

Date Restrictions (Customer Portal Only):
When called from customer portal context:
- Minimum days from today (skipDaysFromCurrentDate setting)
- Maximum days from today (billingDateRestrictToDays setting)
- External API calls bypass these restrictions

Authentication: Requires valid X-API-Key header

Endpoint: PUT /subscriptions/cp/api/subscription-contracts-update-billing-date
Version: 0.0.1

## Query parameters:

  - `contractId` (integer, required)

  - `nextBillingDate` (string, required)

  - `rescheduleFutureOrder` (boolean)

## Response 200 fields (application/json):

  - `get__typename` (string)

  - `id` (string)

  - `createdAt` (object)

  - `updatedAt` (object)

  - `nextBillingDate` (object)

  - `status` (string)
    Enum: "ACTIVE", "PAUSED", "CANCELLED", "EXPIRED", "FAILED", "$UNKNOWN"

  - `deliveryPrice` (object)

  - `deliveryPrice.amount` (object)

  - `deliveryPrice.currencyCode` (string)
    Enum: "USD", "EUR", "GBP", "CAD", "AFN", "ALL", "DZD", "AOA", "ARS", "AMD", "AWG", "AUD", "BBD", "AZN", "BDT", "BSD", "BHD", "BIF", "BYN", "BZD", "BMD", "BTN", "BAM", "BRL", "BOB", "BWP", "BND", "BGN", "MMK", "KHR", "CVE", "KYD", "XAF", "CLP", "CNY", "COP", "KMF", "CDF", "CRC", "HRK", "CZK", "DKK", "DJF", "DOP", "XCD", "EGP", "ERN", "ETB", "FKP", "XPF", "FJD", "GIP", "GMD", "GHS", "GTQ", "GYD", "GEL", "GNF", "HTG", "HNL", "HKD", "HUF", "ISK", "INR", "IDR", "ILS", "IRR", "IQD", "JMD", "JPY", "JEP", "JOD", "KZT", "KES", "KID", "KWD", "KGS", "LAK", "LVL", "LBP", "LSL", "LRD", "LYD", "LTL", "MGA", "MKD", "MOP", "MWK", "MVR", "MRU", "MXN", "MYR", "MUR", "MDL", "MAD", "MNT", "MZN", "NAD", "NPR", "ANG", "NZD", "NIO", "NGN", "NOK", "OMR", "PAB", "PKR", "PGK", "PYG", "PEN", "PHP", "PLN", "QAR", "RON", "RUB", "RWF", "WST", "SHP", "SAR", "RSD", "SCR", "SLL", "SGD", "SDG", "SOS", "SYP", "ZAR", "KRW", "SSP", "SBD", "LKR", "SRD", "SZL", "SEK", "CHF", "TWD", "THB", "TJS", "TZS", "TOP", "TTD", "TND", "TRY", "TMT", "UGX", "UAH", "AED", "UYU", "UZS", "VUV", "VES", "VND", "XOF", "YER", "ZMW", "USDC", "BYR", "STD", "STN", "VED", "VEF", "XXX", "$UNKNOWN"

  - `lastPaymentStatus` (string)
    Enum: "SUCCEEDED", "FAILED", "$UNKNOWN"

  - `billingPolicy` (object)

  - `billingPolicy.interval` (string)
    Enum: "DAY", "WEEK", "MONTH", "YEAR", "$UNKNOWN"

  - `billingPolicy.intervalCount` (integer)

  - `billingPolicy.anchors` (array)

  - `billingPolicy.anchors.cutoffDay` (integer)

  - `billingPolicy.anchors.day` (integer)

  - `billingPolicy.anchors.month` (integer)

  - `billingPolicy.anchors.type` (string)
    Enum: "WEEKDAY", "MONTHDAY", "YEARDAY", "$UNKNOWN"

  - `billingPolicy.maxCycles` (integer)

  - `billingPolicy.minCycles` (integer)

  - `deliveryPolicy` (object)

  - `lines` (object)

  - `lines.nodes` (array)

  - `lines.nodes.sellingPlanId` (string)

  - `lines.nodes.sellingPlanName` (string)

  - `lines.nodes.productId` (string)

  - `lines.nodes.sku` (string)

  - `lines.nodes.title` (string)

  - `lines.nodes.variantId` (string)

  - `lines.nodes.quantity` (integer)

  - `lines.nodes.customAttributes` (array)

  - `lines.nodes.customAttributes.key` (string)

  - `lines.nodes.customAttributes.value` (string)

  - `lines.nodes.lineDiscountedPrice` (object)

  - `lines.nodes.variantImage` (object)

  - `lines.nodes.variantImage.transformedSrc` (object)

  - `lines.nodes.variantTitle` (string)

  - `lines.nodes.currentPrice` (object)

  - `lines.nodes.discountAllocations` (array)

  - `lines.nodes.discountAllocations.discount` (object)

  - `lines.nodes.pricingPolicy` (object)

  - `lines.nodes.pricingPolicy.basePrice` (object)

  - `lines.nodes.pricingPolicy.cycleDiscounts` (array)

  - `lines.nodes.pricingPolicy.cycleDiscounts.afterCycle` (integer)

  - `lines.nodes.pricingPolicy.cycleDiscounts.computedPrice` (object)

  - `lines.nodes.pricingPolicy.cycleDiscounts.adjustmentType` (string)
    Enum: "PERCENTAGE", "FIXED_AMOUNT", "PRICE", "$UNKNOWN"

  - `lines.nodes.pricingPolicy.cycleDiscounts.adjustmentValue` (object)

  - `lines.nodes.taxable` (boolean)

  - `lines.pageInfo` (object)

  - `lines.pageInfo.hasPreviousPage` (boolean)

  - `lines.pageInfo.hasNextPage` (boolean)

  - `lines.pageInfo.startCursor` (string)

  - `lines.pageInfo.endCursor` (string)

  - `customerPaymentMethod` (object)

  - `customerPaymentMethod.instrument` (object)

  - `customerPaymentMethod.revokedAt` (object)

  - `customerPaymentMethod.revokedReason` (string)
    Enum: "AUTHORIZE_NET_GATEWAY_NOT_ENABLED", "AUTHORIZE_NET_RETURNED_NO_PAYMENT_METHOD", "FAILED_TO_UPDATE_CREDIT_CARD", "STRIPE_API_AUTHENTICATION_ERROR", "STRIPE_API_INVALID_REQUEST_ERROR", "STRIPE_GATEWAY_NOT_ENABLED", "STRIPE_RETURNED_NO_PAYMENT_METHOD", "STRIPE_PAYMENT_METHOD_NOT_CARD", "BRAINTREE_API_AUTHENTICATION_ERROR", "BRAINTREE_GATEWAY_NOT_ENABLED", "BRAINTREE_RETURNED_NO_PAYMENT_METHOD", "BRAINTREE_PAYMENT_METHOD_NOT_CARD", "PAYMENT_METHOD_VERIFICATION_FAILED", "THREE_D_SECURE_FLOW_IN_VERIFICATION_NOT_IMPLEMENTED", "MANUALLY_REVOKED", "FAILED_TO_RETRIEVE_BILLING_ADDRESS", "MERGED", "CUSTOMER_REDACTED", "TOO_MANY_CONSECUTIVE_FAILURES", "CVV_ATTEMPTS_LIMIT_EXCEEDED", "$UNKNOWN"

  - `deliveryMethod` (object)

  - `originOrder` (object)

  - `originOrder.name` (string)

  - `originOrder.fulfillmentOrders` (object)

  - `customer` (object)

  - `customer.displayName` (string)

  - `customer.firstName` (string)

  - `customer.lastName` (string)

  - `customer.email` (string)

  - `customer.phone` (string)

  - `discounts` (object)

  - `note` (string)

  - `billingAttempts` (object)


## Response 400 fields

## Response 401 fields

## Response 403 fields

## Response 404 fields