In earlier OSA versions (BA 5.x or earlier) a locale like 'de_DE' was created for the store. Now it cannot be removed, attempt fails with exception:
Field should contain latin characters only. Please correct
The reason of the exception is a bug with id #PBA-72762 ("Field should contain latin characters only error after BA upgrade") In earlier OSA versions it was possible to create the locals with any symbols in its name, then it was restricted.
Please contact your TAM/PTA Team to remove the locale.