HI Navin,
->Am not able to add Context Code List Mapping to the newly created Data field.
No.
You are to create CodeList Context Mapping for your BCO code list.
Your BCO code list has ACTIVE as an indicator attribute.
So, we create a dummy indicator with default value "True" and bind with ACTIVE in Codelist Context Mapping.
Select your BCO codelist and right click and you will see Codelist Context Mapping.
Best Regards,
Fred