Firstly you need a containment. Presumably the protect was held and redetected?
Then I’d do a root cause analysis. Talk to your staff. Ask them about what happened? Talk to the equipment suppliers, your team, look at the procedure, is it clear? Were people trained in it? How did you audit it?
If you found the procedure was unclear for example, you might rewrite the procedure and train your staff. That would be your corrective action. Your preventive might be a review of all procedures impacting
CCPs with actions as appropriate or it might be a change to your auditing process to have greater independence in it etc.
Or for example you might find the procedure was clear but untrained people were operating the machine. So your corrective may be to train more staff and your preventive could be to change your labour planning to ensure there is always a trained operative planned to work in that area.
The above are just examples. Always always do some root cause analysis l, ideally as a team and then be guided on your actions by where that leads you.