Hello everyone,

I've opened CRM trace files and I saw the following error occur more than 900 times within an hours : 

>Crm Exception: Message: The requested record matches a specified If-None-Match version., ErrorCode: -2147088246
[2019-07-17 15:24:19.432] Process: w3wp |Organization:3d3761b3-6c44-467c-89cb-e67ead1afaec |Thread: 9 |Category: Platform |User: 00000000-0000-0000-0000-000000000000 |Level: Error |ReqId: 37caf443-0b13-4c4f-b580-6d3deb492562 |ActivityId: 37caf443-0b13-4c4f-b580-6d3deb492562 | CrmODataUtilities.Trace ilOffset = 0x24
at CrmODataUtilities.Trace(TraceLevel traceLevel, String message) ilOffset = 0x24
at ExceptionLogger.LogAsync(ExceptionLoggerContext context, CancellationToken cancellationToken) ilOffset = 0x0
at ExceptionLogger.System.Web.Http.ExceptionHandling.IExceptionLogger.LogAsync(ExceptionLoggerContext context, CancellationToken cancellationToken) ilOffset = 0x24
at CompositeExceptionLogger.LogAsync(ExceptionLoggerContext context, CancellationToken cancellationToken) ilOffset = 0x47
at ExceptionLoggerExtensions.LogAsync(IExceptionLogger logger, ExceptionContext context, CancellationToken cancellationToken) ilOffset = 0x23
at <SendAsync>d__1.MoveNext() ilOffset = 0x1FF
at AsyncTaskMethodBuilder`1.Start(TStateMachine& stateMachine) ilOffset = 0x2C
at HttpControllerDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3D
at HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3C
at HttpRoutingDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0xBF
at DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x19
at <SendAsync>d__0.MoveNext() ilOffset = 0x17D
at AsyncTaskMethodBuilder`1.Start(TStateMachine& stateMachine) ilOffset = 0x2C
at CorsMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3D
at DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x19
at <SendAsync>d__0.MoveNext() ilOffset = 0x50
at AsyncTaskMethodBuilder`1.Start(TStateMachine& stateMachine) ilOffset = 0x2C
at CrmETagMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3D
at DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x19
at <SendAsync>d__0.MoveNext() ilOffset = 0xF
at AsyncTaskMethodBuilder`1.Start(TStateMachine& stateMachine) ilOffset = 0x2C
at CrmDelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3D
at DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x19
at <SendAsync>d__0.MoveNext() ilOffset = 0x11D
at AsyncTaskMethodBuilder`1.Start(TStateMachine& stateMachine) ilOffset = 0x2C
at HttpServer.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3D
at HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) ilOffset = 0x3C
at <ProcessRequestAsyncCore>d__0.MoveNext() ilOffset = 0x96
at AsyncTaskMethodBuilder.Start(TStateMachine& stateMachine) ilOffset = 0x2C
at HttpControllerHandler.ProcessRequestAsyncCore(HttpContextBase contextBase) ilOffset = 0x2C
at TaskAsyncHelper.BeginTask(Func`1 taskFunc, AsyncCallback callback, Object state) ilOffset = 0xD
at CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() ilOffset = 0xE6
at HttpApplication.ExecuteStepImpl(IExecutionStep step) ilOffset = 0x64
at HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) ilOffset = 0x3E
at PipelineStepManager.ResumeSteps(Exception error) ilOffset = 0x27A
at HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) ilOffset = 0x31
at HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) ilOffset = 0xB0
at PipelineRuntime.ProcessRequestNotificationHelper(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) ilOffset = 0x131
at PipelineRuntime.ProcessRequestNotification(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) ilOffset = 0x0
at UnsafeIISMethods.MgdIndicateCompletion(IntPtr pHandler, RequestNotificationStatus& notificationStatus) ilOffset = 0xFFFFFFFF
at UnsafeIISMethods.MgdIndicateCompletion(IntPtr pHandler, RequestNotificationStatus& notificationStatus) ilOffset = 0xFFFFFFFF
at PipelineRuntime.ProcessRequestNotificationHelper(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) ilOffset = 0x1E7
at PipelineRuntime.ProcessRequestNotification(IntPtr rootedObjectsPointer, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) ilOffset = 0x0
>{"Error":{"InnerError":null,"Message":"CrmHttpException: The requested record matches a specified If-None-Match version."}}

Apparently, it occurs every time a user tries to perform an action in dynamics crm 365.

Our CRM version:  Version 1612 (8.2.2.112) (DB 8.2.2.112) on-premises

Do anyone has an idea on what could be the problem?