Update Promotion Code

Description

This API allows store owners to update an existing promotion by its unique ID.

Endpoint

• URL: /v1/promotions/{promotionId}
• Method: PATCH

Required Headers

{
  "Authorization": "Bearer JWT_TOKEN",
  "X-MerchantApiKey": "MERCHANT_API_KEY",
  "Content-Type": "application/json"
}

📥 Request Body

Parameter	Type	Required	Description	Since	Example
name	string	true	The name of the promotion	-
code	string	true	The code for the promotion Validation[Size(max=50, min=3, message=Promotion code must be between 3 and 50 characters)]	-
description	string	false	A description of the promotion	-
startDate	string	true	The start date of the promotion	-	yyyy-MM-dd HH:mm:ss
endDate	string	true	The end date of the promotion	-	yyyy-MM-dd HH:mm:ss
discount	number	true	The discount percentage for the promotion Validation[Min(value=0, message=Discount must be at least 0); Max(value=100, message=Discount cannot exceed 100)]	-	0
discountType	enum	false	The type of discount. Defaults to PERCENTAGE if not provided, for backward compatibility. [Enum: PERCENTAGE, FLAT_AMOUNT, FREE_SHIPPING, BUY_X_GET_Y]	-	PERCENTAGE
discountValue	number	false	The discount value. - PERCENTAGE → 0–100 - FLAT_AMOUNT → positive monetary amount - FREE_SHIPPING / BUY_X_GET_Y → omit or send null Validation[DecimalMin(value= 0.0, message=Discount value must be at least 0)]	-	0
maximumDiscountCap	number	false	For PERCENTAGE only — caps the maximum monetary discount applied. Send null to remove an existing cap. Validation[DecimalMin(value=0.0, inclusive=false, message=Maximum discount cap must be greater than 0)]	-	0
minimumOrderValue	number	false	Minimum order subtotal required to qualify. Send null to remove an existing minimum. Validation[DecimalMin(value=0.0, message=Minimum order value must be at least 0)]	-	0
requiredQuantity	int32	false	For BUY_X_GET_Y only — number of items customer must buy. Validation[Min(value=1, message=Required quantity must be at least 1)]	-	0
freeQuantity	int32	false	For BUY_X_GET_Y only — number of free items customer receives. Validation[Min(value=1, message=Free quantity must be at least 1)]	-	0
usageLimit	int32	false	Maximum number of times this promotion can be redeemed across all customers. Send null to make unlimited. Validation[Min(value=1, message=Usage limit must be at least 1)]	-	0
perCustomerUsageLimit	int32	false	Maximum number of times a single customer can redeem this promotion. Send null to make unlimited per customer. Validation[Min(value=1, message=Per customer usage limit must be at least 1)]	-	0
status	string	false	Lifecycle status of the promotion. The status of the promotion (e.g., active, expired, upcoming) Restricted transitions: DEPLETED cannot be manually set — it is system-managed.	-

Example API Call (Using Fetch)

fetch("https://api.shopsynch.com/v1/promotions/679f8f5a3b5f2173201c2582", {
  method: "PATCH",
  headers: {
    "Authorization": "Bearer JWT_TOKEN",
    "X-MerchantApiKey": "MERCHANT_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "name": "Spring Sale",
    "code": "SPRING20",
    "description": "Hurrray",
    "startDate": "yyyy-MM-dd HH:mm:ss",
    "endDate": "yyyy-MM-dd HH:mm:ss",
    "discount": 4.0,
    "status": "active"
  })
})
.then(response => response.json())
.then(data => console.log(data))
.catch(error => console.error("Error:", error));

Response-fields:

Field	Type	Description	Since	Example
status	boolean	No comments found.	-	true
message	string	No comments found.	-
data	object	No comments found.	-
└─createdAt	string	No comments found.	-	yyyy-MM-dd HH:mm:ss
└─updatedAt	string	No comments found.	-	yyyy-MM-dd HH:mm:ss
└─id	string	No comments found.	-
└─name	string	Name of promotion	-
└─code	string	The code that customers will use to redeem the promotion	-
└─description	string	A description of the promotion	-
└─startDate	string	The start date and time of the promotion	-	yyyy-MM-dd HH:mm:ss
└─endDate	string	The end date and time of the promotion	-	yyyy-MM-dd HH:mm:ss
└─discountType	enum	The type of discount this promotion applies. Defaults to PERCENTAGE for backward compatibility with existing promotions that were created before discount types were introduced. [Enum: PERCENTAGE, FLAT_AMOUNT, FREE_SHIPPING, BUY_X_GET_Y]	-	PERCENTAGE
└─discountValue	number	The discount value — interpretation depends on discountType: PERCENTAGE → value is a percentage. e.g. 10 means 10% off FLAT_AMOUNT → value is a fixed amount in the tenant's currency. e.g. 500 means ₦500 off FREE_SHIPPING → value is ignored, set to ZERO by convention BUY_X_GET_Y → value is ignored, use requiredQuantity + freeQuantity instead	-	0
└─maximumDiscountCap	number	For PERCENTAGE promotions — caps the maximum monetary discount that can be applied. e.g. "20% off but no more than ₦2,000" Null means no cap. Only meaningful when discountType = PERCENTAGE.	-	0
└─minimumOrderValue	number	Minimum order subtotal required to qualify for this promotion. Null or ZERO means no minimum.	-	0
└─requiredQuantity	int32	For BUY_X_GET_Y promotions — the number of items the customer must purchase. Only meaningful when discountType = BUY_X_GET_Y.	-	0
└─freeQuantity	int32	For BUY_X_GET_Y promotions — the number of free items the customer receives. Only meaningful when discountType = BUY_X_GET_Y.	-	0
└─usageLimit	int32	Maximum number of times this promotion can be redeemed across all customers. Null means unlimited.	-	0
└─usageCount	int32	How many times this promotion has been redeemed so far.	-	0
└─perCustomerUsageLimit	int32	Maximum number of times a single customer can redeem this promotion. Null means unlimited per customer.	-	0
└─discount	number	The discount amount for the promotion	-	0
└─status	string	The status of the promotion (e.g., active, expired, upcoming)	-
└─tenantId	string	No comments found.	-

Response-example:

{
  "status": true,
  "message": "",
  "data": {
    "createdAt": "yyyy-MM-dd HH:mm:ss",
    "updatedAt": "yyyy-MM-dd HH:mm:ss",
    "id": "",
    "name": "",
    "code": "",
    "description": "",
    "startDate": "yyyy-MM-dd HH:mm:ss",
    "endDate": "yyyy-MM-dd HH:mm:ss",
    "discountType": "PERCENTAGE",
    "discountValue": 0,
    "maximumDiscountCap": 0,
    "minimumOrderValue": 0,
    "requiredQuantity": 0,
    "freeQuantity": 0,
    "usageLimit": 0,
    "usageCount": 0,
    "perCustomerUsageLimit": 0,
    "discount": 0,
    "status": "",
    "tenantId": ""
  }
}

Next Steps

• Learn more about Adding a Promo Code
• Learn more about Deleting a Promo Code