API reference / Products

Set absolute on-hand stock per variant for a product

PUT/open/v1/products/{id}/stockScope: inventory:write

Service Endpoint Seller token required

Environment	Base URL + Path
Production	`https://open.mallplus.ph/open/v1/products/{id}/stock`
Sandbox	`https://sandbox.open.mallplus.ph/open/v1/products/{id}/stock`

Common Signing and Seller Headers

Header	Type	Required	Rules	Description
X-MallPlus-Partner-Id	string	Yes	Issued client ID for the calling app.	Identifies the partner app whose secret signs the request.
X-MallPlus-Timestamp	integer	Yes	Unix timestamp in seconds; default acceptance window is 90 seconds.	Prevents replay outside the allowed signing window.
X-MallPlus-Signature-Version	string	Yes	Use `3` for HMAC v3.	Selects the request signing algorithm.
X-MallPlus-Nonce	string	Yes	32-64 lowercase hexadecimal characters, unique per request.	Replay-protection nonce included in the v3 signing base string.
X-MallPlus-Signature	string	Yes	HMAC-SHA256 over timestamp, client ID, method, path, canonical query, body hash, and nonce.	Cryptographic proof that the request was signed with the app secret.
X-MallPlus-Access-Token	string	Yes	Required when the operation says seller token required.	Seller OAuth access token returned by the authorization flow.
X-MallPlus-Seller-Id	string	Yes	Required when `X-MallPlus-Access-Token` is required.	Seller ID bound to the seller OAuth token.

Parameters

Name	In	Type	Required	Rules	Description
id	path	string	Yes	-	The product ID.

Request Body required

Field	Type	Required	Rules	Description
items	array<ProductStockUpdateItemRequest>	Yes	Min items: 1; Max items: 100	Items associated with this request, response, or event.
items[]	ProductStockUpdateItemRequest	No	No additional properties	A variant stock update to apply in a bulk stock request.
items[].variant_id	string	Yes	Min length: 1	Product variant ID associated with this value.
items[].stock_quantity	integer	Yes	Minimum: 0; Maximum: 1000000000	Available stock quantity.

Response Parameters

Field	Type	Rules	Description
success	enum	Allowed: true	Whether the stock update succeeded.
data	object	No additional properties	Response or event payload for this schema.
data.items	array<VariantStockUpdate>	-	One entry per variant the request updated.
data.items[]	VariantStockUpdate	No additional properties	Confirmation of one applied variant stock change.
data.items[].variant_id	string	-	Variant whose stock was set.
data.items[].stock_quantity	integer	-	Stock level now in effect for the variant.

Error Codes

HTTP Status	Schema	Description
400	ErrorResponse	Validation error, or a missing/malformed required signing header (BAD_REQUEST)
401	ErrorResponse	Unauthorized — invalid credentials, invalid signature, or expired timestamp (TIMESTAMP_EXPIRED)
403	ErrorResponse	Forbidden — insufficient scope
404	ErrorResponse	The requested resource does not exist or is not visible to the authenticated seller
409	ErrorResponse	The request conflicts with the current resource state or reuses an idempotency key
413	ErrorResponse	The request body exceeds the endpoint payload limit
429	ErrorResponse	The partner or endpoint rate limit has been exceeded
502	ErrorResponse	The upstream commerce service rejected the request or returned an invalid response
503	ErrorResponse	A required platform or upstream dependency is temporarily unavailable
504	ErrorResponse	The upstream commerce service did not respond before the platform timeout

Machine-readable codes are returned in error.code: ACCOUNT_LOCKED, APPROVE_FAILED, APP_LIMIT_REACHED, APP_NOT_FOUND, AUTHORIZATION_CODE_EXPIRED, AUTHORIZATION_REVOKED, AUTH_CODE_EXPIRED, AUTH_CODE_USED, BAD_REQUEST, CANCELLATION_ALREADY_PROCESSED, CANCELLATION_DEADLINE_EXCEEDED, CANCEL_FAILED, CANNOT_DELETE_ACCOUNT_WITH_APPS, CONCURRENT_MODIFICATION, CONFLICT, CREATE_FAILED, DISPUTE_FAILED, DUPLICATE, EMAIL_ALREADY_EXISTS, EMAIL_NOT_VERIFIED, FILE_TOO_LARGE, FORBIDDEN, HMAC_VERSION_DEPRECATED, IDEMPOTENCY_KEY_IN_PROGRESS, IDEMPOTENCY_KEY_REQUIRED, IDEMPOTENCY_KEY_REUSED, INTERNAL_ERROR, INVALID_AUTHORIZATION_CODE, INVALID_CREDENTIALS, INVALID_DEVELOPER_TYPE, INVALID_FILE_CONTENT, INVALID_FILE_TYPE, INVALID_JSON, INVALID_NONCE, INVALID_PATH, INVALID_PICKUP_DATE, INVALID_REFRESH_TOKEN, INVALID_REQUEST, INVALID_SIGNATURE, INVALID_STATE, INVALID_TRANSITION, INVALID_VERIFICATION_TOKEN, MAINTENANCE, MEMBER_PERMISSION_DENIED, MISSING_NONCE, NONCE_REUSED, NOT_FOUND, NOT_IMPLEMENTED, ORDER_NOT_CANCELLABLE, PAYLOAD_TOO_LARGE, PICKUP_DATES_UNAVAILABLE, PRODUCT_HAS_ACTIVE_ORDERS, PRODUCT_UNDER_REVIEW, PROFILE_ALREADY_SUBMITTED, PROFILE_TYPE_MISMATCH, PROXY_ERROR, RATE_LIMITED, REDIRECT_URL_MISMATCH, REFRESH_TOKEN_EXPIRED, REFRESH_TOKEN_REUSED, REJECT_FAILED, RETURN_ALREADY_PROCESSED, RETURN_DEADLINE_EXCEEDED, RE_AUTHORIZATION_REQUIRED, SANDBOX_LIMIT_REACHED, SELLER_TOKEN_REQUIRED, SERVICE_UNAVAILABLE, SESSION_EXPIRED, SHIPMENT_ALREADY_ARRANGED, SHIPMENT_NOT_ARRANGED, SHIPPING_LABEL_UNAVAILABLE, SHIP_FAILED, SIGNATURE_REPLAYED, SSRF_CHECK_FAILED, TEST_SHOP_LIMIT_REACHED, TIMESTAMP_EXPIRED, TOKEN_REVOKED, TOO_MANY_REQUESTS, UNAUTHORIZED, UPLOAD_ERROR, UPLOAD_NOT_CONFIGURED, UPSTREAM_ERROR, UPSTREAM_TIMEOUT, VALIDATION_ERROR, VERIFICATION_LINK_USED, VERIFICATION_TOKEN_EXPIRED, WEBHOOK_SUBSCRIPTION_EXISTS

Request Example

curl -X PUT "https://open.mallplus.ph/open/v1/products/id_123/stock" \
  -H "X-MallPlus-Partner-Id: mp_partner_123" \
  -H "X-MallPlus-Timestamp: 1786924800" \
  -H "X-MallPlus-Signature-Version: 3" \
  -H "X-MallPlus-Nonce: 4f8b9a0c4d5e6f708192a3b4c5d6e7f8" \
  -H "X-MallPlus-Signature: <hex_hmac_sha256>" \
  -H "X-MallPlus-Access-Token: seller_access_token" \
  -H "X-MallPlus-Seller-Id: seller_123" \
  -H "Content-Type: application/json" \
  --data '{
  "items": [
    {
      "variant_id": "variant_id_123",
      "stock_quantity": 0
    }
  ]
}'

Response Example

{
  "success": true,
  "data": {
    "items": [
      {
        "variant_id": "prod_0Q4bua7uA5PJ_v1",
        "stock_quantity": 25
      }
    ]
  }
}