Answer:
Record it in the risk register, discuss potential responses and make a note to update the RBS.
Step-by-step explanation:
Risk management is the process by which the management of an organisation identifies, assessed, and controls threats that may affect the company's capital or earnings.
The risks can be as a result of natural disasters, management error, financial uncertainty, or accidents.
In the given instance if a risk is not on any of the categories in you Risk Breakdown Structure (RBS), there is need to record it in the risk register, discuss potential responses and make a note to update the RBS.