I was using 6.5.4 with nested item-sets and it was working.
Now it is not working on 6.6.0-SNAPSHOT with nested item-sets, The server log says the is not valid and the content studio can’t load this content-type. It seems to work when I remove but I need to use occurrences.
The only reason I want nested item-sets is to structure the JSON output. The data is all flat when using field-set.
I tried this and got the same problem only when I used xmlns="urn:enonic:xp:model:1.0" in the content type. When I removed that then no error and the nested item-sets seem to work.
`16:38:25.560 ERROR c.e.x.j.i.e.JsonExceptionMapper - Could not load part descriptor …
…
Invalid content was found starting with element ‘occurrences’. One of ‘{“urn:enonic:xp:model:1.0”:maximize, “urn:enonic:xp:model:1.0”:default}’ is expected.
When you have the xmlns set then it does the validation. We should force validation all the time. Could you please upload the part descriptor where the problem occurs?