Re-submit papers, check more strictly, and many people fail. If you fail the thesis, you can't get a master's degree, but you can only get a diploma. Although this can be certified, after all, there is no degree, so the employer does not recognize it, nor can it be used to settle down and take an examination of civil servants. This kind of situation is quite common in Britain, but don't worry too much. If certain conditions are met, the degree can still be identified.