New York Application For Authority (Foreign Professional Service Corp) is an application process for foreign entities wishing to operate a professional service corporation in the state of New York. It is also known as the Certificate of Authorization and is submitted to the New York Department of State. The application is typically used by professional service corporations such as lawyers, accountants, architects, and engineers that are formed under the laws of a foreign jurisdiction and wish to do business in the state of New York. Different types of New York Application for Authority (Foreign Professional Service Corp) include: 1. Professional Service Corporation Application 2. Professional Service Corporation Amendment Application 3. Professional Service Corporation Merger Application 4. Professional Service Corporation Conversion Application 5. Professional Service Corporation Dissolution Application 6. Professional Service Corporation Reinstatement Application 7. Professional Service Corporation Renewal Application.