# Alias ID

## How to Assign a Default Cooperation Partner for an Object

| ### What to do:
| To work through this example, you must have completed the example Creating an Object with Alias Identification.
| When defining a default cooperation partner for an object, the selected cooperation partner and the alias information is displayed in the mask header.
| Select Start > Item. The Item mask is opened.
| Select the item ART-CPA-1000
| Click on the Alias IDs tab.
| Select the cooperation partner White and Wilson.
| In the context menu click Set Default. The checkbox in the Default column is filled in.
| To update the main mask click in the mask header. The cooperation partner and the alias identification is displayed in the main header.
| If you have set a global filter for the cooperation partner (see Set global filter for Cooperation Partners), the global cooperation partner will be displayed in the mask header and not the default cooperation partner of the object.