Tally · Certificate
Every migration tool claims the data came across. This one hands you a document that shows it — ledger by ledger, with the differences named rather than averaged away.
A CA moving forty clients cannot verify each one by eye. The certificate does the verification and shows its working — which is the difference between believing the migration and being able to demonstrate it.
Not a sample, not a summary — every ledger that came across.
Tally closing beside Autobooks opening, in the same row.
Zero on almost every line. Where it is not, the amount and the reason.
Once it ties, you have a document. That is what you show, not a screenshot.
A certificate that hides a difference would be worse than no certificate — so it does not.
If it ties, you know. If it does not, you know that too.