Tomcat HTTP status 403 error when using SAP BI Mobile App via SUP

Tomcat 403 error - Access to the specified resource () has been

forbidden.

received when calling URL

http://BIsystem_name:8080/MobileBIService/SUP/VerifyUser/MobiSec

The KB 1762237 does not help in our case

Please help to troubleshoot and resolve this issue ASAP

SUP.properties have the correct parameters

MobiSec.cms=<correct IP>

MobiSec.auth=secEnterprise