External ID addition as a custom field in device management

[bdm]

Hello,

as you can see in the example below, this device has an external ID additionally to its internal ID:

what should be configured if we want to add it as a new column? and are we allowed to add it? or we can only add the fragments under the main managed object? knowing that the external ID cannot be found under the managed object (/inventory/managedObjects/{cumulocity_id} and it can be found under /identity/

[Philipp_Emmel]

External IDs cannot be configured as data grid columns currently.

To become columns in grids the properties must be in the listed managed objects. External IDs are separate entities in the returned JSON documents and cannot be queries like this.

Cumulocity - OpenAPI

Cumulocity - OpenAPI

If the property is available somewhere else in the device managed object it may be possible to list it directly from there.