What are the Consequnces of a BoP Surplus

-Surpluses means the Economy is Competitive -But if its done that for a long time, Japan, then Stagnation can experience. This means Supply for Domestic Conumsption is Low and Economic Activity halts -Overreliance on Exports -If its done [Surplus] via a Undervalued Currency, then Inflationary Pressure [Price of Imported Componets] will Rise making Price Levels rise as a result.