{
  "cpnDetails": {
    "couponCode": "",
    "isValid": false,
    "isApplied": false,
    "couponType": "Coupon",
    "isStackable": true,
    "isCharityCoupon": false,
    "errorType": "",
    "addedCpns": [],
    "appliedCpns": []
  }
}