There are different types of errors (just a few): * Validation errors (e.g.: trying to persist something, users want to see as many as possible in one go) * Co

There are different types of errors (just a few): * Validation errors (e.g.: trying to persist something, users want to see as many as possible in one go) * Compile time errors (seen by programmers) * Runtime errors without resolution (user gets 500, logs should contain the details) * Runtime errors with resolutions (users should see something nice, maybe logs contain more info) * ... This is very important for the message...