You can use this method to login API service.
There are two ways to use this service.
In the first method you can access "username" and "password" information.
In the second method, you can access "ApiKey" and "ApiPassword" information.
You can use received ApiCode value to call other methods.
You can recall this methot to get new ApiCode value when the session timed out
You get (00006) error code when the session timed out.