Creating asset all fields grayed out

Hi

I'm trying to install asset accounting on my client and I'm having an issue while creating new assets (AS01). The problem is that when I enter the asset creation screen ALL the fields are grayed out (except Base Unit of Measure). When I go to Extras -> Group Box Info I get this information:

Manage historically Display Status in screen layout rule (screen selection) Inventory number Display Status in screen layout rule (screen selection) Acct determination Display Status in screen layout rule (screen selection) Base Unit of Measure Maintenance pStatus in screen layout rule (screen selection)
Quantity Display Status in screen layout rule (screen selection) Serial number Display Status in screen layout rule (screen selection) Additional description Display Status in screen layout rule (screen selection) Description Display Status in screen layout rule (screen selection) Longtxt.:C-acc.view Display Status in screen layout rule (screen selection) Long text exists Display Status in screen layout rule (screen selection) Techn.view long text Display Status in screen layout rule (screen selection) Asset main no. text Display Status in screen layout rule (screen selection) Manage historically Display Status in screen layout rule (screen selection)

Now, obviously I wanted to check out the status in screen layout rule, so I went to Spro -> Financial Accounting (New) -> Asset Accounting ->Master Data -> Screen Layout ->Define Screen Layout for Asset Master Data

Then, I enter the same information corresponding to the asset I'm creating ( Screen layout, Logical field groups, Field group rules). Everything in this screen looks normal (almost all the fields are set to optional), but still I'm getting the mentioned problem.

Is there something else I could look at to solve this?

Thanks.