{"errorMessages":[],"errors":{"customfield_10215":"Field 'customfield_10215' cannot be set. It is not on the appropriate screen, or unknown."}}

Trying to create an issue with the HTTP action within power automate.
using a basic atth wit API key using a administrative service account.

when posting the action I do receive the error notification shown above.
It was not a problem in the sandbox environment but soon moving to prod.

anyone any suggestions

problem was not the customfield but the issuetype.