What is rankCustomFieldId in rank api, I want to appear my ticket on top in kanban board.

[Ganesh chandra]

I am using rank api (rest/agile/1.0/issue/rank) and request is :

{ "issues": [ "TIP-330", "10008" ], "rankBeforeIssue": "TIP-327", "rankCustomFieldId": "10973"}

What is rankCustomFieldId in this request and how can i find my rankCustomFieldId from ticket/jira?

I am getting this error :
{ "errorMessages": [ "A rank custom field with ID '10,973' could not be found." ], "errors": {}}

[Nic Brough -Adaptavist-]

The rankBeforeIssue function only works for fields that are of type "global rank" (not name or description, but type).

I note that your key for your rank field seems unusual.  On most Cloud systems, it will be a lower number, typically 10020, so 10973 makes me think you've added another field for it.  Is that 10973 of the type rank or something else?