The case concerns a former senior IT manager who raised concerns about how a data loss had been handled.
A hearing for Barclays' appeal to the Bombay High Court is listed for Oct. 20, court records show.
They declined to comment on the specifics of the Indian case.
Gupta has also appealed to the Bombay High Court, court records show, arguing the pay-out awarded was too low, the source familiar with the appeals said.
Last year, Gupta also filed a secondary civil case against Barclays, another court filing shows.
Persons:
Atul Gupta, Jes Staley, Francesca West, Gupta, Arpan Chaturvedi, Sinead Cruise, Alexander Smith
Organizations:
Barclays, Reuters, Financial, Authority, FCA, Global Service Centre Private Limited, Bombay High Court, Thomson
Locations:
Indian, Pune, Bombay