The phrase "other necessary requirements" refers to any additional conditions, qualifications or criteria that may be required for something to happen or to achieve a particular goal. These could include things such as specific skills, knowledge, resources, permits, approvals, documentation, certification, etc., which are deemed essential beyond the basic prerequisites for success. The phrase is often used in legal contracts, job descriptions, academic programs or other formal settings to specify any additional obligations that must be met before something can be considered complete or acceptable.