Unable to activate MPOS device

Hi All, 

I am currently trying install MPOS for a customer, when on the device activation form it throws this error:

When i looked in the event logs where the Retail Server is installed i am receiving this error: 

CommerceRuntimeException was thrown.Microsoft.Dynamics.Commerce.Runtime.ConfigurationException: The published channel can not be found in local database. Please make sure at least 1 retail channel is published to this DB through AX.
at Microsoft.Dynamics.Commerce.Runtime.Data.StorageResolver.GetFirstPublishedChannelId(IEnumerable`1 storageLookups)
at Microsoft.Dynamics.Commerce.Runtime.Data.StorageResolver.GetChannelId()
at Microsoft.Dynamics.Commerce.Runtime.Data.StorageResolver.GetConnectionString()
at Microsoft.Dynamics.Commerce.Runtime.Data.DatabaseAccessor.ExecuteReader[T](SqlPagedQuery query)
at Microsoft.Dynamics.Commerce.Runtime.Data.DatabaseAccessor.ExecuteSelect[T](SqlPagedQuery query)
at Microsoft.Dynamics.Commerce.Runtime.Data.EmployeeDataManager.GetEmployeePermissions(String staffId, ColumnSet columnSet)
at Microsoft.Dynamics.Commerce.Runtime.Services.UserAuthenticationService.EmployeeLogOnRealTimeService(UserLogOnServiceRequest request)
at Microsoft.Dynamics.Commerce.Runtime.Services.UserAuthenticationService.LogOnUser(UserLogOnServiceRequest request)
at Microsoft.Dynamics.Commerce.Runtime.Services.UserAuthenticationService.ExecuteRequest[TResponse](ServiceRequest request)
at Microsoft.Dynamics.Commerce.Runtime.Services.Service.Execute[TResponse](ServiceRequest request)

 Does anyone have an idea on how to resolve this issue?

Thanks,

James