Support and further development of a purchasing system IV

Several applications and interfaces to other systems are maintained and further developed, supplemented by various reports and documents in the communication between purchasing and suppliers. The scope of this project comprises the implementation of extensions and new functions, as well as refactoring of the source code along with the implementation of unit tests. Development and testing are carried out on the basis of concepts and agile procedures. Testing involves test data creation, surface and backend tests. The most important interfaces are data provision for third-party systems and communication with a document management system.