Error Adding new Item Part

Hello all,

I recently ran into a problem which doesn't allow any identities to add a new item "Part" except for the Aras PLM identity.

The "Can Add" access and permissions are correctly set, and when any user try to add a new item Part, the following error appear: No permissions of type=can_change_access found for the item

Does anyone have a clue of what might bring this error? (using Aras 10 and Firefox)

Thanks in advance!
Xavier