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

# Update sales order reservations

Set reservationType on order items to be reserved on a warehouse or a purchaseorder. Use PURCHASE\_ORDER\_CONFIRMED to mark order items as '`Purchase order created in external system`'

Required permissions: SALES\_ORDER,RETURN\_ORDER,PURCHASE\_ORDER

```json
{"openapi":"3.0.2","info":{"title":"Flow Retail API version 2","version":"2.0.0"},"tags":[{"name":"Order","description":"Order"}],"servers":[{"description":"Flow Retail Production","url":"https://api.flowretail.com/v2"},{"description":"Flow Retail Stage","url":"https://api.stage.flowretail.com/v2"}],"security":[{"accessToken":[]},{"authToken":[]},{"integrationToken":[]}],"components":{"securitySchemes":{"accessToken":{"description":"Access token recevied after user login with a deviceToken","scheme":"bearer","type":"http"},"authToken":{"description":"Token received from the auth service","scheme":"bearer","type":"http"},"integrationToken":{"scheme":"bearer","type":"http"}},"requestBodies":{"OrderItemsReservationUpdateRequest":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/OrderItemsReservationUpdateSchema"}}}}},"schemas":{"OrderItemsReservationUpdateSchema":{"title":"OrderItemsReservationUpdateSchema","type":"object","required":["reservationType","orders"],"properties":{"uid":{"description":"The uid must be warehouseUid if the reservationType is `WAREHOUSE`, purchaseOrderItemUid if it is `PURCHASEORDER` and receivementItemUid if it is `PURCHASEORDER_CONFIRMED`","$ref":"#/components/schemas/UID"},"reservationType":{"type":"string","enum":["WAREHOUSE","PURCHASEORDER","PURCHASEORDER_CONFIRMED"]},"orders":{"description":"A list of all the orders with order items that should be marked as ready for delivery","type":"array","items":{"$ref":"#/components/schemas/OrderItemUpdateReservationSchema"}}},"description":"If reservationType == WAREHOUSE, uid must have a value pointing to a legal warehouseUid.\nIf reservationType == PURCHASE, uid must have a value pointing to a legal purchase order."},"UID":{"title":"UID","type":"string","pattern":"^[A-Za-z0-9-_]+"},"OrderItemUpdateReservationSchema":{"title":"OrderItemUpdateReservationSchema","type":"object","required":["orderUid","orderItemUid"],"properties":{"orderUid":{"$ref":"#/components/schemas/UID"},"orderItemUid":{"$ref":"#/components/schemas/UID"}}}}},"paths":{"/tenants/{tenantUid}/orders/reservations":{"post":{"summary":"Update sales order reservations","tags":["Order"],"responses":{"204":{"description":"No Content"}},"operationId":"post-tenants-orders-reservations","description":"Set reservationType on order items to be reserved on a warehouse or a purchaseorder.\nUse PURCHASE_ORDER_CONFIRMED to mark order items as '`Purchase order created in external system`'\n\nRequired permissions: SALES_ORDER,RETURN_ORDER,PURCHASE_ORDER\n","requestBody":{"$ref":"#/components/requestBodies/OrderItemsReservationUpdateRequest"}}}}}
```


---

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