When ShippingPreference is NO_Shipping, always failed to create Subscription

[frankzhang210]

The major issue is ShippingAddress is not reference type; PayerID is not omitempty.

Subscriber struct {
PayerID string json:"payer_id,**omitempty**"
ShippingAddress *ShippingDetail json:"shipping_address,omitempty"
Name CreateOrderPayerName json:"name,omitempty"
EmailAddress string json:"email_address,omitempty"
}

If not fixed as above indicated, always send shipping_address: {}, payerid:'' to paypal, then rejected with invalid address.

Sample payload without above fix,

{"plan_id":"P-9A585647VE5076042M4X5HUI","start_time":"2024-12-03T06:25:00Z","subscriber":{"payer_id":"","shipping_address":{},"name":{"given_name":"John","surname":"Doe"},"email_address":"[email protected]"},"application_context":{"brand_name":"Example Store","locale":"en-US","shipping_preference":"NO_SHIPPING","user_action":"SUBSCRIBE_NOW","payment_method":{"payee_preferred":"IMMEDIATE_PAYMENT_REQUIRED","standard_entry_class_code":"WEB"},"return_url":"https://example.com/return","cancel_url":"https://example.com/cancel"}}

Could you fix this issue?