When I withdraw from the PHP exchange website, An error happened.
I get the notice “Account has insufficient funds” from the error data  by wireshark.

And then I check the Bitcoin sourcecode and find these:


     // Check funds
      int64 nBalance = GetAccountBalance(strAccount, nMinDepth);
      if (nAmount > nBalance)
 -        throw JSONRPCError(-6, "Account has insufficient funds");
 +        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Account has insufficient funds");
  '

The wallet in the server do has enough funds, so what reason it might be?