You can find an example curriculum for the Master's program in mathematics in the course of study description on RWTH Aachen's central pages.
Curriculum with Credit Information
You can find the general structure of the curriculum for the Master course of study in mathematics and the related credits in the current examination regulation, p. 165 (de).
Curricula for the Individual Application Subjects
You can gladly contact the departmental advisor about the current curriculum for an application subject.