--- updatedAt: 2026-06-29T21:10:45.000Z --- # Update Shipment Tracking The purpose of this service is to capture tracking information from sellers. For small parcel shipments, sellers must provide the tracking info including carrier name and tracking numbers. WFS will use the data to capture updated expected delivery date to adjust the fulfillment inbound capacity to avoid any receiving delays. Seller will also be able to view the updated expected delivery date through the Seller Center UI or calling the Get Inbound Shipment Items API. [block:html] { "html": "\n \n" } [/block] # OpenAPI definition ```json { "openapi": "3.0.1", "info": { "title": "Fulfillment Management", "version": "1.0", "description": "With Walmart Fulfillment Services, you can focus on sales while Walmart expertly take care of fast shipping, seamless returns, and customer service. Simply send your inventory to Walmart fulfillment centers, where we will store your products securely and prepare them swiftly for shipping when an order is placed." }, "x-readme": { "samples-languages": [ "shell" ], "proxy-enabled": false }, "servers": [ { "url": "https://marketplace.walmartapis.com", "description": "Production URL" }, { "url": "https://sandbox.walmartapis.com", "description": "Sandbox URL" } ], "security": [ { "accessToken": [] } ], "paths": { "/v3/fulfillment/shipment-tracking": { "post": { "tags": [ "Fulfillment" ], "summary": "Update Shipment Tracking", "description": "The purpose of this service is to capture tracking information from sellers.\n\nFor small parcel shipments, sellers must provide the tracking info including carrier name and tracking numbers. WFS will use the data to capture updated expected delivery date to adjust the fulfillment inbound capacity to avoid any receiving delays. \n\nSeller will also be able to view the updated expected delivery date through the Seller Center UI or calling the Get Inbound Shipment Items API.", "externalDocs": { "description": "View Guide", "url": "/doc/us/mp/us-mp-fulfillment/#2934" }, "operationId": "updateShipmentTrackingDetails", "parameters": [ { "in": "header", "name": "Authorization", "description": "Basic authorization header. Base 64 encodes the Client ID and Client Secret retrieved in step two of the integration steps.", "required": true, "schema": { "type": "string" }, "example": "Basic YzcyOTFjNmItNzI5MC00...." }, { "in": "header", "name": "WM_CONSUMER.CHANNEL.TYPE", "description": "A unique ID to track the consumer request by channel. Use the Consumer Channel Type received during onboarding", "required": false, "schema": { "type": "string" } }, { "in": "header", "name": "WM_QOS.CORRELATION_ID", "description": "A unique ID which identifies each API call and used to track and debug issues; use a random generated GUID for this ID", "required": true, "schema": { "type": "string" }, "example": "b3261d2d-028a-4ef7-8602-633c23200af6" }, { "in": "header", "name": "WM_SVC.NAME", "description": "Walmart Service Name", "required": true, "schema": { "type": "string" }, "example": "Walmart Service Name" } ], "requestBody": { "description": "Request fields", "content": { "application/json": { "schema": { "required": [ "carrierName", "shipmentId" ], "type": "object", "properties": { "shipmentId": { "type": "string" }, "carrierName": { "type": "string" }, "trackingInfo": { "maxItems": 100, "minItems": 1, "type": "array", "xml": { "wrapped": true }, "items": { "type": "string" } } } }, "example": { "shipmentId": "12345", "carrierName": "UPS", "trackingInfo": [ "123", "456-1", "789-2" ] } } }, "required": true }, "responses": { "200": { "description": "Successful operation", "content": { "application/json": { "schema": { "required": [ "status" ], "type": "object", "properties": { "status": { "type": "string", "enum": [ "OK", "CREATED", "ACCEPTED", "NO_CONTENT", "PARTIAL", "MOVED_PERMANENT", "FOUND", "SEE_OTHER", "NOT_MODIFIED", "TEMPORARY_REDIRECT", "BAD_REQUEST", "UNAUTHORIZED", "FORBIDDEN", "NOT_FOUND", "METHOD_NOT_ALLOWED", "NOT_ACCEPTABLE", "REQUEST_TIMEOUT", "CONFLICT", "REQUEST_ENTITY_TOO_LARGE", "UNSUPPORTED_MEDIA_TYPE", "UNPROCESSABLE_ENTITY", "TOO_MANY_REQUESTS", "FAIL", "BAD_GATEWAY", "SERVICE_UNAVAILABLE", "GATEWAY_TIMEOUT" ] }, "header": { "type": "object", "properties": { "headerAttributes": { "type": "object", "additionalProperties": { "type": "object" } } }, "xml": { "name": "ServiceHeader" } }, "errors": { "type": "array", "xml": { "wrapped": true }, "items": { "required": [ "code" ], "type": "object", "properties": { "code": { "type": "string" }, "field": { "type": "string" }, "description": { "type": "string" }, "info": { "type": "string" }, "severity": { "type": "string", "enum": [ "INFO", "WARN", "ERROR" ] }, "category": { "type": "string", "enum": [ "APPLICATION", "SYSTEM", "REQUEST", "DATA" ] }, "causes": { "type": "array", "xml": { "wrapped": true }, "items": { "type": "object", "properties": { "code": { "type": "string" }, "field": { "type": "string" }, "type": { "type": "string" }, "description": { "type": "string" } }, "xml": { "name": "Cause" } } } }, "xml": { "name": "Error" } } }, "payload": { "type": "object" } }, "xml": { "name": "ServiceResponse" } }, "example": { "status": "OK" } } } } } } } }, "components": { "securitySchemes": { "accessToken": { "type": "apiKey", "in": "header", "name": "WM_SEC.ACCESS_TOKEN", "description": "An access token required for authenticating API requests. Obtain the token from `POST /v3/token` using the `client_credentials` grant type." } } } } ```