I have done it, and it has not been clearer, I attach the message
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Error 7/1/2022 6:30:49 PM Microsoft-Dynamics-Commerce-RetailServer 1001 None "An exception occurred while executing request. CorrelationId: '{96b23fff-a8ca-47a9-95ad-7149fb355640}'. Ex: 'System.ServiceModel.FaultException: Internal Server Error
Server stack trace:
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at Microsoft.Dynamics.Retail.Cdx.RealtimeServiceClientLibrary.RealtimeServiceClient.ProcessInvokeResult(String methodName, String apiName, Int32 parameterCount, RetailTransactionServiceResponse response, Guid correlationId, RetailRealTimeServiceContractChannel channel, Boolean isAsyncCall, Exception& exception, Int32& resultCount, Int64 executionTimeInMs)
at Microsoft.Dynamics.Retail.Cdx.RealtimeServiceClientLibrary.RealtimeServiceClient.GetResponseFromMethod(TransactionServiceInvoker transactionServiceInvoker, String methodName, String apiName, Int32 parameterCount)
at Microsoft.Dynamics.Retail.Cdx.RealtimeServiceClientLibrary.RealtimeServiceClient.IsAlive()
at Microsoft.Dynamics.Commerce.Runtime.Services.HealthCheckTransactionService.RunHealthCheckRequest(RunHealthCheckRealtimeRequest request)
at Microsoft.Dynamics.Commerce.Runtime.RequestHandlerAsyncAdapter.Execute(Request request)
at Microsoft.Dynamics.Commerce.Runtime.CommerceRuntime.<Execute>d__42`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.Dynamics.Commerce.Runtime.CommerceRuntime.<Execute>d__42`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Dynamics.Commerce.Runtime.Services.HealthCheckService.<RunRealtimeServiceHealthCheck>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Dynamics.Commerce.Runtime.RequestHandlerAdapter.Execute(Request request)
at Microsoft.Dynamics.Commerce.Runtime.CommerceRuntime.<Execute>d__42`1.MoveNext()'. ExceptionType: 'System.ServiceModel.FaultException'. ErrorResourceId: ''. HandlerTypeName: 'Microsoft.Dynamics.Commerce.Runtime.Services.HealthCheckService'. RequestTypeName: 'Microsoft.Dynamics.Commerce.Runtime.Services.Messages.RunHealthCheckServiceRequest'. HandlerAssemblyName: 'Microsoft.Dynamics.Commerce.Runtime.Services'. HandlerAssemblyPublicKeyToken: '31bf3856ad364e35'. UnscrubbedException: ''."
I have verified when trying to configure the MPOS and the error message is very similar, as I read in the message there is some authentication, but we have not changed credentials or anything like that.
Any ideas?