Service 'ZABC' was created but metadata could not be loaded

Hello Experts,

                        I have created model class and data provider class on backend system and also created service on it. than i created RFC connection on Gateway system successfully and it is doing remote logon also. and i also create the Alias without checking the checkbox LOCAL GW and LOCAL APP.but the problem is coming when i am trying to add the service it is saying as 'Service 'ZABC' was created but its metadata could not be loaded.'  and when i am executing the service using the gateway client it giving error as 'Model 'ZABC_MODEL_0001_BE' contains errors. Contact Adminstrator' .

Please provide valuable solutions.

Regards,

Shahezad