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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/te9rel63/Advanced_Features/Advanced_Inventory_Features/Creating_Masters_for_Job_Costing.htm

Creating Masters for Job Costing

On enabling Job Costing for the company, the relevant masters can be enabled for job costing.

The ledgers that can be enabled for job costing are:

Cost Centres

Godowns

Stock Journal Voucher class