Creating DFF for Lookup in Oracle Fusion

1. Manage Descriptive Flexfields 

2. Search the Flexfield Code : FND_LOOKUP_VALUES_B 

3. Click Edit Icon 

4. Click Manage Contexts 

5. Create New Context or search existing context 

6. Add or Edit Existing Segments 

7. Save and Close 

8. Click Deploy Flexfield 

Note : You need to open a new session to see the changes.