Candidate was able to create 2 Candidate Profiles that has the same email address and was able to apply to the same job requisition.
SuccessFactors Recruiting Management
Reason why Candidate was able to create two Candidate Profiles with the same email is because the Candidate created the 2nd profile using a different email address and changed it to the one she applied initially, to confirm this, you may need to check the Candidate History of both the Candidate Profile:
2nd Candidate: Notice the email change
Confirm with Candidate which profile they wish to proceed and either merge the two duplicate profiles (https://launchpad.support.sap.com/#/notes/2103863) or move the other one to a disposition status
- Duplicate Candidates - Candidate email address , KBA , LOD-SF-RCM-CAN , General Candidate Issues (not Offers, not Profiles) , How To