Before using the functionality delivered with SAP note 1851646 please make sure that the prerequisites regarding: SAP BASIS Support Package, Kernel and SAP GUI version and patch levels are fulfilled from SAP note 1415647.
The code corrections delivered with 1851646 are created for older SAP BASIS Support Package levels too due to sustainability and code maintenance reasons. This doesn't mean, that the functionality can be used without fulfilling the requirements of note 1415647.