# Update customer birth date

Updates or sets a customer's birth date in the loyalty system. Used for birthday reward programs and customer segmentation. Validates the birth date format and triggers any applicable birthday point earning rules.

Endpoint: PUT /api/external/update-customer-birth-date

## Header parameters:

  - `X-API-Key` (string, required)
    API key for authentication

## Request fields (application/json):

  - `customerId` (integer)
    Unique identifier of the customer

  - `dob` (string)
    Customer date of birth
    Example: "2026-01-12"

  - `status` (string)
    Customer loyalty status
    Enum: "ACTIVE", "INACTIVE", "EXCLUDED", "EXCLUDED_BY_CUSTOMER", "ACTIVE", "INACTIVE", "EXCLUDED", "EXCLUDED_BY_CUSTOMER"

## Response 200 fields (application/json):

  - `id` (integer)

  - `shop` (string, required)

  - `customerId` (integer, required)

  - `firstName` (string)

  - `lastName` (string)

  - `email` (string)

  - `status` (string)
    Enum: "ACTIVE", "INACTIVE", "EXCLUDED", "EXCLUDED_BY_CUSTOMER"

  - `createAt` (string, required)

  - `dob` (string)

  - `enableEmail` (boolean)

  - `token` (string)

  - `redeemLimit` (integer)

  - `redeemLimitOnce` (integer)

  - `vipTier` (string)

  - `vipTierId` (integer)

  - `vipTierSummary` (string)

  - `availablePoints` (number, required)

  - `pendingPoints` (number, required)

  - `displayName` (string)

  - `vipTierExpiredAt` (string)

  - `spentAmount` (number)

  - `lastActivity` (string)

  - `ordersCount` (integer)

  - `lastMonthlyReminderSentDate` (string)

  - `redeemedPoints` (number)

  - `lastRewardExpiryReminderSentDate` (string)

  - `vipAssignType` (string)
    Enum: "MANUAL", "AUTO_RENEWAL", "RENEWAL_ON_HIGHER_TIER"

  - `phone` (string)

  - `loyaltyProgramEnabled` (boolean)

  - `emailSetting` (string)

  - `skipReview` (boolean)

  - `updatedSettings` (string)

  - `storeCreditAccountId` (string)

  - `emailBouncedOrFailed` (boolean)

  - `availableStoreCredits` (number)

  - `isDeletedFromShopify` (boolean)

  - `enableEmailMarketing` (boolean)

  - `enableSmsMarketing` (boolean)

  - `tags` (string)

  - `vipTierAmount` (number)


## Response 400 fields

## Response 401 fields

## Response 500 fields