In general, however, none of these explanations appear to be scientifically or historically supportable. A standardized, repeatable and automated solution creates a known, expected and supportable environment. Based upon the data provided, the ERF's published conclusions were not supportable. Availability is only meaningful for supportable systems. However, it proved difficult to sell these applications because most weren't generalized and supportable systems. Systems that require maintenance are said to be supportable if they satisfy the following criteria. It assumes the supportable transmission rates are known and there are no transmission errors. It handed down a very supportable verdict. In general, it should have a supportable opinion (specific/focused) and clear intent for the essay. His decision is supportable in law and in fact.