The answer to this question depends on the intended user base, on how you want your users to access your forms, as well as on the technology stack that you already have or are ready to deploy.
If your users are quality control analysts, and therefore the purpose of their use is to create a generated user interface for managing test cases, then this program has several commercial tools. A quick Google search for terms such as “generate ui forms from XSD to test web services” should give you the first page of the main players in this space (I won’t give names to avoid conflicts of interest). There are differences in the way vendors approach this, which are related to the time it takes to create these forms from large XML schema structures, which in turn translate into varying degrees of usability. Given what I see in DATEX, in terms of complexity,it may be difficult for you to find a free tool for this ...
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