This endpoint allows an issuer to update the status of an existing manual KYC application identified by its ID. The application must be an active manual KYC application of a client of your organization (otherwise 404 KYC_APPLICATION_NOT_FOUND). It is updated in place and keeps its _id; each status change is recorded in the KYC history. kycStatus is one of incomplete, pending, submitted, verified, rejected (any case; Approved is stored as verified).