DoorScope implements ReqIF version 1.1 and checks compatibility of the files based on the assertions required by the standard. If you get this error, either the file or the DoorScope implementation have issues. You can check the latter here: https://github.com/rochus-keller/DoorScope/blob/github/ReqIfParser.cpp#L440.
Obviously a type definition is missing in the provided file. Do you have any information about the expected ReqIF version, or whether it is ReqIF at all? Maybe your admin could create a minimal document (or use one of the DOORS demo documents) and export it the same way your file was exported, so you could send me this as an example.