Bidzina Chemia

I am sending a request from my PHP web application to the following endpoint (I left the endpoint generic):

{{ServerUrl}}/{{Platform}}/FileCabinets/{{FileCabinetId}}/Query/DialogExpression?dialogId=00000000-0000-0000-0000-000000000000

The query in the body looks like this:
 

{"ForceRefresh":false,
"Operation":"And",
"AdditionalResultFields":[],
"Start":0,
"Count":25,
"IncludeSuggestions":false,
"Condition":[{"DBName":"DocuWareFulltext","Value":["test"]}],
"SortOrder":[{"Direction":"Desc","Field":"DOKUMENT_ID"}],
"AdditionalCabinets":["a2a20ddd-cedd-4541-8f1b-4c6ebd8c8591"]}

I am getting the following error with a status code of 500 and an internal code of 0.
 

"Message":"An item with the same key has already been added.","Exception":"
   ArgumentException: An item with the same key has already been added."

If I send the same request without "AdditionalCabinets," it works.

It also works if I send the same request with "AdditionalCabinets" but use a field other than "DOKUMENT_ID" set in "SortOrder."

So, it obviously has a problem with the field "DOKUMENT_ID."

I thought maybe there was some kind of constraint set for the field "DOKUMENT_ID" in the database, but that's not the case.

I would appreciate it if someone could help me.

Thanks a lot.