Follow these rules when tagging an accounts dimension:
You can tag only one dimension as accounts.
When you tag a dimension as accounts, all members in the dimension inherit the accounts property.
You can create an outline that does not have a dimension tagged as accounts. In this scenario, an accounts dimension containing one measure will be created for you.
The time dimension and the accounts dimensions are calculated before other dimensions in the database.
You can calculate members of the accounts dimension on a second pass through the outline. For an overview of two pass calculation, see Two Pass Calculation Overview.