The New York Affidavit in Support of Modification of Support is a legal document that is submitted in court to request an increase or decrease in a current child support or spousal support order. It is used when the parties to the existing order want to modify the current terms of the support order due to a change in circumstances. The document outlines the reasons why the modification is needed, and it must be signed by both parties to the existing support order. There are two types of New York Affidavit in Support of Modification of Support: 1. Affidavit in Support of Modification of Child Support: Used when the parties want to modify the amount of child support that is being paid, either increasing or decreasing the current amount. 2. Affidavit in Support of Modification of Spousal Support: Used when the parties want to modify the amount of spousal support that is being paid, either increasing or decreasing the current amount.