In addition to the general admission requirements you have to fulfill the following for a full scholarship.
To be eligible for one of the DAAD-full scholarships you should have obtained your last university degree no longer than 6 years ago. You should be able to prove that you are among the best 30% of your graduation class.
Furthermore, you need to submit a proof of at least two years of working experience after your first degree – including a recommendation letter of your employer. Please note the general standards for the submission of additional documents that are listed here. To apply for a full-scholarship you have to upload all required documents – including language certificates – within your online application by the application deadline.