Issue CP User Login Attempt via API Failed

[mreza]

hi
i use below code to create auto-login link via API:

<?xml version='1.0'?>
<packet version="1.6.3.5">
<server>
    <create_session>
        <login>{login}</login>
        <data>
            <!-- Base64-encoded IP address of client, who logs into Plesk -->
            <user_ip>{user_ip}</user_ip>
            <!-- Base64-encoded hostname of computer from which the request is sent -->
            <source_server>{source_server}</source_server>
        </data>
    </create_session>
</server>
</packet>

and i got this error: You have entered incorrect username or password.
and this error in action log: 'CP User Login Attempt via API Failed' ('Client GUID': '0cf045df-c3c5-4b39-b37a-f95571b9c62f' => '', 'Login Name': 'admin' => '')

i check username and password via web interface and its work correctly