> For the complete documentation index, see [llms.txt](https://docs.xorosoft.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xorosoft.com/developers-api/inventory-management/update-inventory.md).

# Update Inventory

It is used to update the inventory by using request format.

| Field          | Data Type | Default Value | Description                                                                                                                                                                          |
| -------------- | --------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `ItemNumber`   | string    | NA            | SKU number.                                                                                                                                                                          |
| `DeltaQty`     | decimal   | 0             | Instead of sending a new and old value for inventory an adjustment value can be sent.                                                                                                |
| `OldQty`       | decimal   | 0             | The original stock level that the client believes the product variant has. This should be sent to avoid a race condition when the item being adjusted is simultaneously sold online. |
| `NewQty`       | decimal   | 0             | The number of items in stock for this product variant.                                                                                                                               |
| `LocationDisp` | string    | NA            | Warehouse 3PL location (Provided by the client).                                                                                                                                     |

Note: If New/Old Qty and Delta Qty are both provided then New/Old Qty will take priority and Delta Qty will be ignored.

```json
{"openapi":"3.0.3","info":{"title":"Xorosoft ERP Public API","version":"2026.07"},"tags":[{"name":"Inventory Management","description":"Use Inventory Management APIs to read and update stock availability across stores, warehouses, locations, items, products, and inventory qualities. These endpoints are typically used by commerce channels, warehouse tools, 3PL integrations, and replenishment workflows that need current on-hand, allocated, available, and not-available quantities. Write operations should be used carefully because they can affect fulfillment and accounting downstream."}],"servers":[{"url":"https://res.xorosoft.io","description":"Xorosoft ERP API server"}],"security":[{"basic":[]}],"components":{"securitySchemes":{"basic":{"scheme":"basic","type":"http"}}},"paths":{"/api/xerp/inventory/updateinventory":{"post":{"responses":{"200":{"content":{"application/json":{"schema":{"properties":{"Data":{"type":"string"},"IsForwardRequest":{"type":"boolean"},"Message":{"type":"string"},"MessageTitle":{"type":"string","nullable":true},"Result":{"type":"boolean"}},"type":"object"}}},"description":"OK","headers":{}}},"tags":["Inventory Management"],"description":"It is used to update the inventory by using request format.\nField               |Data Type          |Default Value          |Description\n-------------------|-------------------|-------------------|--------------\n``ItemNumber``|string|NA|SKU number.\n``DeltaQty``|decimal|0|Instead of sending a new and old value for inventory an adjustment value can be sent.\n``OldQty ``|decimal|0|The original stock level that the client believes the product variant has. This should be sent to avoid a race condition when the item being adjusted is simultaneously sold online.\n``NewQty``|decimal|0|The number of items in stock for this product variant.\n``LocationDisp``|string|NA|Warehouse 3PL location (Provided by the client).\n\nNote: If New/Old Qty and Delta Qty are both provided then New/Old Qty will take priority and Delta Qty will be ignored.","operationId":"post_inventory_updateinventory","requestBody":{"content":{"application/json":{"schema":{"properties":{"DeltaQty":{"type":"number"},"ItemNumber":{"type":"string"},"LocationDisp":{"type":"string"},"NewQty":{"type":"number"},"OldQty":{"type":"number"}},"type":"object"}}}},"summary":"Update Inventory"}}}}
```


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