Hi Tapan,
Thanks for Replying.
after your reply i try to regenerate CSR and PSE files with
sapgenpse get_pse -p SAPSSLS.pse -x psepin -r webdisp.req "CN=company.co.uk, OU=my company, O=company name L=London , SP=London, C=UK"
After that i import all certificate together at once
sapgenpse import_own_cert -c star_company_co_uk.cer -r TrustedRoot.cer -r DigiCertCA2.cer -p SAPSSLS.pse -x psepin
then continue with creating security login for user <sid>adm and restart the application service.
and here are some helpful link related with SSL setup
Installation of SAP Web Dispatcher and SSL Setup (updated and corrected) - Basis Corner - SCN Wiki
Creating a PSE for the Server Using SAPGENPSE - Network and Transport Layer Security - SAP Library
http://help.sap.com/saphelp_47x200/helpdata/en/7c/f3d02c3b5e234e8ab2d43d9fd48d29/content.htm
Regards,
Firman