Conflict. The request couldn't be processed because of a conflict in the request. Note that creating a certificate for the same contract, within the five-minute interval, can trigger a 409 response as well.
This response example represents an attempt to cancel a change to an enrollment that's already pending on the enrollment.
{
"type": "https://akab-qfory454uub7b6wf-oa72n2ohlk6sv2od.luna.akamaiapis.net/cps/v2/error-types/cannot-cancel-pending-change",
"title": "Cannot cancel pending change.",
"instance": "https://akab-qfory454uub7b6wf-oa72n2ohlk6sv2od.luna.akamaiapis.net/cps/v2/error-types/cannot-cancel-pending-change?id=cca4df3cb6f246b09f966b2ac1c7d9e5",
"detail": "There is a pending change on the enrollment."
}