Approver Email is subject to CA regonizable email IDs.
Use endpoint GET Approver List to retrieve the CA Email List.
Special Note for OTE: Email delivery had been disabled in OTE environment.
curl --location --request PUT 'https://oteapi.webnic.cc/ssl/v2/orders/1077190495/email/approver?name=webnic.sbs&email=webmaster@webnic.sbs' \
--header 'Authorization: Bearer <token>'{
"code": "1000",
"message": "Command completed successfully."
}