---
updatedAt: 2026-08-03T18:09:41.000Z
---

# Bulk update

 <div class="amber-callout" aria-label="Migration notice"><p><strong>Migrate to Global APIs:</strong> New sellers and approved Solution Providers should use Global APIs. Existing users must migrate to avoid disruption and access new capabilities coming to your market. Explore <a href ="https://developer.walmart.com/global-marketplace/docs/global-marketplace-apis" style="text-decoration: underline !important; font-weight: 700;">Global Marketplace migration resources</a>.</p></div><br>

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# OpenAPI definition

```json
{
  "openapi": "3.0.1",
  "info": {
    "version": "1.0",
    "title": "Inventory Management",
    "description": "Maintaining up-to-date inventory for your items on Walmart.com ensures a great experience for your customers and greater sales opportunities for you."
  },
  "x-readme": {
    "samples-languages": [
      "shell"
    ],
    "proxy-enabled": false,
    "explorer-enabled": true
  },
  "servers": [
    {
      "url": "https://marketplace.walmartapis.com",
      "description": "Production URL"
    }
  ],
  "paths": {
    "/v3/ca/feeds": {
      "post": {
        "tags": [
          "Inventory"
        ],
        "summary": "Bulk update",
        "description": " <div class=\"amber-callout\" aria-label=\"Migration notice\"><p><strong>Migrate to Global APIs:</strong> New sellers and approved Solution Providers should use Global APIs. Existing users must migrate to avoid disruption and access new capabilities coming to your market. Explore <a href =\"https://developer.walmart.com/global-marketplace/docs/global-marketplace-apis\" style=\"text-decoration: underline !important; font-weight: 700;\">Global Marketplace migration resources</a>.</p></div><br>",
        "operationId": "updateBulkInventory",
        "parameters": [
          {
            "name": "feedType",
            "in": "query",
            "description": "Includes details of each entity in the feed. Do not set this parameter to true.",
            "required": true,
            "schema": {
              "type": "string",
              "default": "inventory"
            }
          },
          {
            "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": true,
            "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"
          },
          {
            "name": "WM_SEC.TIMESTAMP",
            "in": "header",
            "description": "The Epoch timestamp",
            "required": true,
            "schema": {
              "type": "string"
            },
            "example": "1443748249449"
          },
          {
            "name": "WM_SEC.AUTH_SIGNATURE",
            "in": "header",
            "description": "The vendor's digital signature, generated by running the JAR file or custom generation code",
            "required": true,
            "schema": {
              "type": "string"
            },
            "example": "9fg3TPeRt0WSGbXNGGj4kSQ9L6PMBX.....9Zj5aDyg="
          },
          {
            "name": "WM_CONSUMER.ID",
            "in": "header",
            "description": "A unique ID required to access the API",
            "required": true,
            "schema": {
              "type": "string"
            },
            "example": "Get the Consumer ID from Developer Center after logging in"
          }
        ],
        "requestBody": {
          "content": {
            "multipart/form-data": {
              "schema": {
                "required": [
                  "file"
                ],
                "type": "object",
                "properties": {
                  "file": {
                    "type": "string",
                    "description": "Feed file to upload",
                    "format": "binary"
                  }
                }
              },
              "examples": {
                "xml1": {
                  "value": "<InventoryFeed xmlns=\"http://walmart.com/\">\n    <InventoryHeader>\n        <version>1.4</version>\n    </InventoryHeader>\n    <inventory>\n        <sku>1068155</sku>\n        <quantity>\n            <unit>EACH</unit>\n            <amount>10</amount>\n        </quantity>\n        <fulfillmentLagTime>1</fulfillmentLagTime>\n    </inventory>\n    <inventory>\n        <sku>10210321</sku>\n        <quantity>\n            <unit>EACH</unit>\n            <amount>20</amount>\n        </quantity>\n        <fulfillmentLagTime>1</fulfillmentLagTime>\n    </inventory>\n</InventoryFeed>"
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Successful Operation",
            "content": {
              "application/xml": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "feedId": {
                      "type": "string",
                      "description": "A unique identifier, which is returned by the Bulk Upload API, used to track and manage the status of the feed file."
                    },
                    "additionalAttributes": {
                      "type": "object",
                      "nullable": true
                    },
                    "errors": {
                      "type": "object",
                      "nullable": true
                    }
                  }
                },
                "example": "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<FeedAcknowledgement xmlns:ns2=\"http://walmart.com/\">\n    <feedId>E9C04D1FFD99479FBC1341D56DD5F930@AQMB_wA</feedId>\n</FeedAcknowledgement>"
              }
            }
          }
        }
      }
    }
  }
}
```