Changes to Create order

the request property customerIP became required

the customerId request property type changed from integer to string, and format from int32 to no format

deleted the header request parameter Content-Type

deleted the header request parameter X-Publisher-Token

removed the request property billingAddress

removed the request property paymentOperation

removed the request property subscriptionId

removed the request property taxRate

removed the optional property message from the response with the 200 status

removed the optional property order from the response with the 200 status

removed the optional property success from the response with the 200 status

api operation id create-an-order removed and replaced with create-order

added the non-success response with the status 400

added the non-success response with the status 422

added the optional property errors to the response with the 200 status

added the optional property responseData to the response with the 200 status