# Product Usage

## How to Assign a Product Platform to an Application

| ### What to do:
| In order to work through this example, you must have completed the example Creating an Application.
| Select Start > Products> Product Usage> Applications. The Applications mask is opened.
| Find the application App-001.
| Click on the Platforms tab.
| To change to insert mode click .
| Change to the Number field and click . The Product Platforms list is opened.
| Find the product platform PLT-001.
| Highlight the corresponding line and select Take entry from the context menu.
| To save the entry click .
| The product platform PLT-001 is now assigned to the application App-001.
| The reference between an application and a product platform can only be deleted if the application is in state 230 | Released or 260 | Withdrawn.