* Test case `DocumentBoV1Test.validate_withoutSchema_dataseteditorddi32` failed on Olivers dev-box. See [this error message](https://git.gesis.org/stardat/stardat-ddiflatdb-core/issues/22#note_13212). * Why don´t test executions fail on my machine and also not on the CI pipelines? ### Findings * The test document `without-schema-demo-dataseteditor-ddi32.xml` is not suitable at all for the test purpose `validate xml against schema` , because the file is even not wellformed: The prefixes are used by the elements but not defined: The document is not well-formed, so it can´t be used to test if it is validatable. But even worse ... * The reason why the test failed on Olivers devbox is: The validation is poorly implemented! There is a [conditional-check on the message of the thrown SAXParseException](https://git.gesis.org/stardat/stardat-ddiflatdb-core/blob/master/src/main/java/org/gesis/stardat/ddiflatdb/core/bo/DocumentBoV1.java#L393), which shows that the file is not wellformed. But because I´ve thought this shows invalidity of the file, I checked against the message text :joy: :sob: :joy: and - tata - the message text is in english! - pause - Olivers JVM message texts are german! There seems not to be a easy way to distinguish if a file is not validatable or it is invalid. So this feature is suspended! ### Actions * `DONE` File with unbound prefixes is good as test case for not-wellformedness. * `DONE` Execute schema validation and map all SAXParseException to ContentNotValidException