Authentication by digital signature
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....bill or challan issued under rule 4A or consignment note issued under rule 4B may be authenticated by means of a digital signature. ^2[Provided that a person located in non-taxable ter....
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....sp; (2) The Board may, by notification, specify the conditions, safeguards and procedure to be followed by any person issuing digitally signed invoices.] ---------....
TaxTMI