Explanation:

The statement that data localization means that the transfer of data across borders should be disallowed or restricted is correct. Data localization typically involves regulations or requirements that data must be stored or processed within a specific geographic location or country.

The statement about the Sri Krishna committee opposing the idea of data localization in India is not mentioned in the given statements, so we cannot confirm its accuracy based on the provided information.

The statement that the entire data related to the payment system in India has necessarily to be stored in a system located within the country is correct. India has implemented data localization requirements for payment system data, mandating that it must be stored and processed within the country.

So, statements 1 and 3 are correct