If a sync fails, see /dashboard/logs for the exact HTTP status + BA response.
Common errors:
401 Unauthorizedโ mTLS cert expired or wrong supplier ID. Check expiry at /connector.400 Validation Failedโ required field missing. Common: profession code (BERUFENET ID), working hours, contract type. BA returns a<ValidationError>element with detail.409 Conflictโ job already reported. BAconn dedupes byjob_ref; duplicate calls are skipped.500 Internal Server Errorโ BA-side outage. BAconn retries on the next 15-min sync run.
For repeated failures: open a ticket at Support, referencing the log entry.