Hello Venkatesh,
Please refer the post installation document for integration scenarios
This issue already discussed in lot of threads,
did you get chance to check the below threads
Need assisitance mapping Connectors in GRC 10 | SCN
Error: Scenario Link is not defined in grfnconn... | SCN
Please refer below link and provide relevant information if issue not solved
Minimum information to provide in discussion threads in the GRC space
Regards
Baithi