A CSV row is rejected
Download a fresh export and compare its headers and formatting with the rejected row. Check required names, email formatting, Boolean values and the accepted working-days format. Correct the source file and preview it again.An existing person was duplicated
An import without the exported record ID can be treated as a new row. Use Upsert with preserved IDs when updating exported records. Review duplicates in the directory before deleting anything.A synced person is missing
Check the most recent LISS Sync History, then confirm the person exists in the source system with the expected identifier. A successful connection does not guarantee that every optional record was selected or suitable for import.A Teacher cannot access the portal
Confirm the teacher is active, has a reliable email and has the expected teacher code or source match. Then verify that Teacher portal access is enabled.CSV imports add or update records; they do not bulk-delete records.