Tippu Sultan contacted Travancore Raja to destroy the Lines as early as possible. Tippu Sultan wrote to the Raja, "The Cochin Raja has been my tributary fifty or sixty years  – after I possessed the Calicut country you erected lines on a part of the Cochin country.
Tippu Sultan urged Travancore Raja to dismantle the Lines at the earliest opportunity. He wrote to the Raja, stating that he had been a tributary of the Cochin Raja for fifty or sixty years and after acquiring Calicut, the Raja had erected lines on a part of the Cochin country.