strustsso2 - cannot analyze certificate

Hello Team,

Please help me to fix the issue with 'import of certificate'

When we tried to import certificate we are getting 'cannot analyze certificate' error in strustsso2

When we tried to import certificate in other system it is working fine .. means no issue with certificate.

What could be the reason for this .. below are the parameters in the system -

login/create_sso2_ticket = 2

login/accept_sso2_ticket = 1

Thanks,

Prabhakar