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"Use Edit Log for transactions/masters, and digital signature for invoices/reports with Release 2.1. Download NOW!"
https://help.tallysolutions.com/docs/te9rel50/Maintaining_Company_Data/Maintaining_Group_Company/Maintaining_Group_Company_in_Tally.htm

Maintaining Group Company in Tally.ERP 9

The accounts of individual companies that belong to the same management can be consolidated to present a single financial report of the group of companies. The management can view ย the performance of the group as a whole when required.

To create/alter a group company, click the below links:

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