Disable Donor Account

Disable an approved Donor Account. A disabled Donor Account remains `approved` but cannot submit new Grant Requests. Existing Grant Requests already in flight are unaffected — disabling does not retroactively cancel or reject prior activity. Use this when a DAF needs to temporarily prevent a donor from initiating new grants (e.g. account under review, donor offboarding) without rejecting the underlying identity verification. This endpoint is idempotent — calling it on an already-disabled account returns the Donor Account unchanged. <Warning> - The Donor Account must be in `approved` status. Calls on a `pending` or `rejected` account return status `409 Conflict`. </Warning>