> Execute in BaseX GUI:
> validate:xsd-init()
> Re-run c# REST HTTP CALL emits incorrect result.

Note that the GUI runs in an independent JVM; it does not influence HTTP calls. 

If I got you wrong, please strip everything that does not seem to contribute to the erroneous behavior; see [1] for more information.

Best, 
Christian

[1] https://sscce.org/