Error in configuration of SAP logon tickets

What causes this issue?

The system was not configured for SAP logon tickets:
At least one of the two parameters login/create_sso2_ticket and
login/accept_sso2_ticket currently has the value 0.

System Response

It is not possible to use SAP logon tickets.
Therefore, there is also no single sign-on support when using SAPGUI
HTML Control and calling local ICF services (see SAP note 612670).

How to fix this error?

Contact the system administrator.

Procedure for System Administrators

<DS:TRAN.RZ11>Check the values of the two profile parameters</> and set
them to suitable values, for example:
login/create_sso2_ticket = 2
login/accept_sso2_ticket = 1
After setting the profile parameters (using <DS:TRAN.RZ10>transaction
RZ10</>) you must restart the application server for the new values to
become active.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.