House I'm in the process of applying for Masters degree in Austria and one of the documents required is;

• Confirmation issued by the university where the Bachelor or Diploma degree was completed verifying that all requirements for admission to an equivalent Master’s degree program have been fulfilled and the applicant could be admitted an equivalent Master’s degree program at that university.

My question is who is incharge of issuing this particular document because my lecturers don't seem to know what am talking about when I tell them what I need. Please any info would be helpful.

Is it a good idea,if I employ the use of an agency to help me with the process of authentication and legalization?