Authentication with Web Accees managment through Headervariable

Hi All

We have configured External WEb Access Management Product (reverse proxy, passthrough) for authentication to access our BI Java 7.0 Application using Header variable.We have configured authschemes.xml and UME Properties

When we are trying to access our BI Java 7.0 Application then get the below Error

" Cannot logon user defined in header variable"

Please help me on this if anyone have faced these type of issue

Waiting for your fast immediate response on this

Thanks with Regards

Deelip Kumar