SAP Message 1B075 - Error: "Financial Services" Extension Set is not active; see long text

Diagnosis
You are trying to start a transaction in an application in the"Financial Services" Extension Set (EA-FINSERV). This Extension Set isinactive in your system. You are therefore not allowed to start thetransaction.
You can set the indicators in the IMG activity Activation Switch for SAPR/3 Enterprise Extension Set). Note that you cannot switch off theExtension Set after it has been activated.
Further information is available in the documentation for this IMGactivity, as well as in SAP Notes 535003 and 588364. We stronglyrecommend you read these before you activate an Extension Set.
You should also refer to SAP Note 598937.