Program is adding 20,000 as a Pension and annuity income exclusion on the NYS tax return. what is this?

Your pension income is not taxable in New York State when it is paid by:

• New York State or local government
• the federal government, including Social Security benefits
• certain public authorities

If you are over the age of 59 ½ or turn 59 ½ during the tax year, you may qualify for a private pension and annuity exclusion of up to $20,000. This exclusion from New York State taxable income applies to pension and annuity income included in your federal adjusted gross income. For more information on the pension exclusions and other benefits for retired people, see Publication 36, General Information for Senior Citizens and Retired Persons.

Source: https://tax.custhelp.com/app/answers/detail/a_id/607/related/1