After the failure of First Round Table Conference efforts were made by the Government to make an agreement that the congress would attend the next Round Table Conference.The Viceroy, Lord Irwin, was authorised to hold talks with Mahatma Gandhi. Finally, Gandhi and Irwin made\xa0an agreement on 5 March 1931.The agreement is called Gandhi-Irwin pactBy this pact Government agreed to release most of the civil disobedience volunteers, against whom there was no allegation of violence.The Congress suspended the Civil Disobedience Movement and agreed to participate in the second Round Table Conference.

It was signed in 5 march 1931, it consented gandhiji to participate in second round table conference in london
Pact which was signed between gandhi and Lord irwin

this is Gandhi Irwin pact not Poona pact
Under this some seats r been reserved for schedule caste and schedule tribes and backward classes It is signed between Gandhi ji and Dr B R Ambedkar