The endpoint changes the buyer data if necessary. Currently, the endpoint is used only to change the email.
Depending on the success of the request, the following answers may be received:
HTTP: 204(No content) is returned - the email has been successfully changed.HTTP returns: 404(Not Found) is returned - the buyer not found in the Billing database.HTTP: 409(Conflict) is returned - this email is ALREADY busy.HTTP: 422(Unprocessable Content) is returned - the email has been .