# Assigning custom inventory metadata to a managed node
<a name="inventory-custom-metadata"></a>

The following procedure walks you through the process of using the Amazon Systems Manager [PutInventory](https://docs.amazonaws.cn/systems-manager/latest/APIReference/API_PutInventory.html) API operation to assign custom inventory metadata to a managed node. This example assigns rack location information to a node. For more information about custom inventory, see [Working with custom inventory](inventory-custom.md).

**To assign custom inventory metadata to a node**

1. Install and configure the Amazon Command Line Interface (Amazon CLI), if you haven't already.

   For information, see [Installing or updating the latest version of the Amazon CLI](https://docs.amazonaws.cn/cli/latest/userguide/getting-started-install.html).

1. Run the following command to assign rack location information to a node.

   **Linux**

   ```
   aws ssm put-inventory --instance-id "{{ID}}" --items '[{"CaptureTime": "2016-08-22T10:01:01Z", "TypeName": "Custom:RackInfo", "Content":[{"RackLocation": "Bay B/Row C/Rack D/Shelf E"}], "SchemaVersion": "1.0"}]'
   ```

   **Windows**

   ```
   aws ssm put-inventory --instance-id "{{ID}}" --items "TypeName=Custom:RackInfo,SchemaVersion=1.0,CaptureTime=2021-05-22T10:01:01Z,Content=[{RackLocation='Bay B/Row C/Rack D/Shelf F'}]"
   ```

1. Run the following command to view custom inventory entries for this node.

   ```
   aws ssm list-inventory-entries --instance-id {{ID}} --type-name "Custom:RackInfo"
   ```

   The system responds with information like the following.

   ```
   {
       "InstanceId": "{{ID}}", 
       "TypeName": "Custom:RackInfo", 
       "Entries": [
           {
               "RackLocation": "Bay B/Row C/Rack D/Shelf E"
           }
       ], 
       "SchemaVersion": "1.0", 
       "CaptureTime": "2016-08-22T10:01:01Z"
   }
   ```

1. Run the following command to view the custom inventory schema.

   ```
   aws ssm get-inventory-schema --type-name Custom:RackInfo
   ```

   The system responds with information like the following.

   ```
   {
       "Schemas": [
           {
               "TypeName": "Custom:RackInfo",
               "Version": "1.0",
               "Attributes": [
                   {
                       "DataType": "STRING",
                       "Name": "RackLocation"
                   }
               ]
           }
       ]
   }
   ```