Explanation:

1. The Gandhi-Irwin Pact was indeed signed in 1931, marking a pivotal political negotiation between the British regime and the Indian National Congress, with Mahatma Gandhi and Lord Irwin as their respective representatives.
2. One of the primary agreements was the cessation of the Civil Disobedience Movement by the Indian National Congress.
3. In reciprocation to the cessation of the movement, the British agreed to release all political prisoners, excluding those involved in acts of violence.
4. However, a significant omission in the pact was the British's recognition of the INC as the sole representative of India's diverse populace. This particular point was not part of the agreement.