How to migrate everything from Tally to ERPNEXT including the Transactional data ?
ERPNext doesn’t have connector for Tally for migrating everything at once. You can consider sponsoring for this feature.
For now, you can import data in ERPNext via spreadsheet files. You should export masters and transactions from Tally into spreadsheet files. Then paste data in our pre-defined spreadsheet formats and import them in ERPNext.