Answer failure - 998

Hello,

Please advise what I wrong?

url:
https://loginName:password@serverName/ocs/v1.php/config -H ‘OCS-APIRequest:true’

Answer:

<ocs>
<meta>
<status>failure</status>
<statuscode>998</statuscode>
<message>
Invalid query, please check the syntax. API specifications are here: http://www.freedesktop.org/wiki/Specifications/open-collaboration-services. DEBUG OUTPUT:
</message>
</meta>
<data/>
</ocs>

Thanks you.