When the Pandya army invaded the Chola country in 1216 CE, Kopperunchinga I strengthened his position by garrisoning the town of Sendamangalam.
1213, took advantage of the confusion and strengthened his personal position by garrisoning the town of Sendamangalam in the former South Arcot district, converting it into a military stronghold.
His residence was at Sendamangalam, where his father had established the Kadava capital.
He caught and imprisoned the fleeing Chola king at Sendamangalam.