Strittmatter, MishaHeinrich, Robert2023-03-092023-03-092016https://dl.gi.de/handle/20.500.12116/40734Like every other software artifact, metamodels are subject to change even in later phases of the software life cycle. In this problem description paper, we first classify metamodel changes. We then elaborate on the challenges of metamodel evolution. The main challenges are the tight coupling of code to metamodels and the pervasiveness of metamodel dependencies. As this is a problem description paper, we will only present a brief overview of possible solutions.enText/Journal Article0720-8928