works with tally
Keep Tally. Fix the gap around it.
Tally can remain the accounting system. Zofbox gives the people running the factory one thread from customer PO to production and dispatch.

Accounting and operations do different jobs. Zofbox does not replace Tally. It reads it and shows what it means for each order.
the customer
Link the ledger. See what is owed.
The customer page shows invoiced, received and receivable, down to each unpaid invoice, as last synced.

the owner
The same numbers, in one card.
To receive, to pay and stuck in the factory, with the age of each balance and when Tally last synced.

You don't need another ERP project to know what happened to today's orders.
Zofbox is designed around the operational gap around Tally.