Fix new enrolment check in cases when match result is empty

[luhmirin-s]

JIRA ticket
Will be released in: 2026.1.0

Root cause analysis (for bugfixes only)

First known affected version: 2026.1.0

• Somewhere during the refactoring, we lost a case with empty match results in the check if the enrolment call is new. This fails the duplicate check and prevents new enrolment creation if the check is enabled.

Notable changes

• Move the empty list check to a cleaner place. Also added a unit test for this case.

Testing guidance

• Run duplicate enrolment test cases (or do an automated test run)

Additional work checklist

• Effect on other features and security has been considered
• Design document marked as "In development" (if applicable)
• External (Gitbook) and internal (Confluence) Documentation is up to date (or ticket created)
• Test cases in Testiny are up to date (or ticket created)
• Other teams notified about the changes (if applicable)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud