Returned Type: 
UserCreateResult
Returns a UserCreateResult object that has the following structure:
    
    
        
            | int <CreationResult> | if the command's result is OK this tag contains: 0 (zero) user created correctly, 1  (one) user not created. User already exits, 2 (two) user not created. Email address already exits, 3 (three) user not created. Error in email address, 4 (four) user not created. Security question error, 5 (five) user not created. Security answer error, 6 (six) user not created. Password error: it must be at least 7 (seven) character long, 7 (seven) user not created. Unknown error. | 
        
            | string <CreationMessage> | command's execution description |