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If you receive an e-mail with a reminder that you must "reassess" or "reevaluate" a risk, this means that you RE evaluate the outcome in question and build up the history for this particular outcome.
Risk reduction / realize opportunities in case of residual risk
If you do NOT accept a residual risk during evaluation, you must (the system requires) reduce the risk / take advantage of the opportunity in one (or both) of these two ways:
Actions are created to reduce risks and realize opportunities.
Refer to security measures/barriers that are in place to prevent the risk.