[v2][API] How to get "customFields" in "included" data when query a board?

[bergziege]

Hi all,

just set up a v2 instance yesterday and trying to migrate a simple app over to the new api to use custom fields.
But when I get all the data for a board it just gives me an empty array for the custom fields while everything else is in the response.

card labels ...
}, {
      "id" : "1712595369700885597",
      "createdAt" : "2026-02-17T17:21:17.309Z",
      "updatedAt" : null,
      "position" : 65536,
      "name" : null,
      "boardId" : null,
      "cardId" : "1712595333285938267",
      "baseCustomFieldGroupId" : "1712586422654862349"
    } ],
    "customFields" : [ ],
    "customFieldValues" : [ {
      "id" : "1712592277592867911",
      "createdAt" : "2026-02-17T17:15:08.701Z",
      "updatedAt" : null,
      "content" : "Großer Garten",
      "cardId" : "1712592113184539716",
      "customFieldGroupId" : "1712592222186112070",
      "customFieldId" : "1712586813899539471"
    }, {

What could be the reason for that and how to resolve the problem of not having "customFields" while having "customFieldValues" and "customFieldGroups"?

cheers
bergziege