"Account surplus" refers to a situation where a person, business, or country has more money coming in than going out. It means they have more income or receipts than expenses or payments, resulting in a positive balance or surplus. Full definition
A deficit against any country is the result of either a direct or indirect export of excess savings from a current account surplus country. (carnegieendowment.org)
And in this sense you can read a large current account surplus as a sign of financial sector under development rather than of financial strength and maturity. (newyorkfed.org)
The fact that the capital account deficit has grown to overwhelm the current account surplus does not tell us whether or not the net imbalance is driven by fundamentals. (carnegieendowment.org)