The passengers at the airport faced a harried time as the various airlines were forced to issue manual tickets resulting in long queues and flight delays.
"Our team is working to restore the system. Inconvenience caused to our passengers is highly regretted," the AAI said.
Irate passengers took to twitter to ventilalte their grievances.
Reports said the take-off of at least 25 flights was delayed due to the technical snag.
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