Hi Guys,
Today we spun up a new Dynamics 365 sales trail instance and navigated to my environment. I have created an Order and saved then trying to add Products to this Order but getting the below error:
Error popup:

Detailed Error Info:
Exception Message: Required field SalesOrder Id is missing
ErrorCode: -2147220989
HexErrorCode: 0x80040203
ErrorDetails:
HttpStatusCode: 400
TraceText:
[Microsoft.Dynamics.Sales.Plugins: Microsoft.Dynamics.Sales.Plugins.PreOperationSalesOrderLineCreate]
[ef56ab95-e28e-e611-80f1-00155dc13602: Microsoft.Dynamics.Sales.Plugins.PreOperationSalesOrderLineCreate: Create of salesorderdetail]
Entered Microsoft.Dynamics.Sales.Plugins.PreOperationSalesOrderLineCreate.Execute(), Correlation Id: e67b024b-cc26-4853-8f77-ccff94ed168b, Initiating User: c5b3022a-440c-ec11-b6e5-000d3a339c1d
Exception: Microsoft.Dynamics.Solution.Common.CrmArgumentNullException: Required field SalesOrder Id is missing (Fault Detail is equal to Exception details:
ErrorCode: 0x80040203
Message: Required field SalesOrder Id is missing
StackTrace:
at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
at System.Environment.get_StackTrace()
at Microsoft.Dynamics.Solution.Common.CrmException.BuildOrganizationServiceFault(Exception innerException, Int32 errorCode, Int32 statusCode, String message)
at Microsoft.Dynamics.Solution.Common.CrmException..ctor(String message, Exception innerException, Int32 errorCode, Int32 statusCode, Boolean isFlowControlException, Boolean enableTrace)
at Microsoft.Dynamics.Solution.Common.CrmException..ctor(String message, Exception innerException, Int32 errorCode, Int32 statusCode, Boolean isFlowControlException)
at Microsoft.Dynamics.Solution.Common.CrmException..ctor(String message, Exception innerException, Int32 errorCode)
at Microsoft.Dynamics.Solution.Common.CrmArgumentNullException..ctor(String message)
at Microsoft.Dynamics.Solution.Common.Exceptions.ThrowIfNull...)., Correlation Id: e67b024b-cc26-4853-8f77-ccff94ed168b, Initiating User: c5b3022a-440c-ec11-b6e5-000d3a339c1d
Exiting Microsoft.Dynamics.Sales.Plugins.PreOperationSalesOrderLineCreate.Execute(), Correlation Id: e67b024b-cc26-4853-8f77-ccff94ed168b, Initiating User: c5b3022a-440c-ec11-b6e5-000d3a339c1d
Activity Id: 875ea5f9-184f-491c-a024-b6c27b9f54d4
Trail instance Details:

Anyone can help on this issue, thanks in advance.