If its common system the portal application showing last login user’s details in portal even though logged in with different user.
ABAP Security Sessions Enabling in portal system object
Activate the Logoff service in SICF tcode in path
sap → public→ bc→icf→
Existing Travel Management Application in JAVA, in EHP7 it is mandatory to change it to WDA Application.
“The Employee Self Service application of travel management you want to use is outdated“
This option names is changed to Text with Tabs
it is due to new Auth. Object check
You dont have Authorization for Company Code XXXX
Provide nesseary Authorization to the user Auth Obj F_BKPF_BUK