Skip to main content

Notifications

Announcements

No record found.

News and Announcements icon
Community site session details

Community site session details

Session Id :
Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / Retail POS Offline Dat...
Microsoft Dynamics AX (Archived)

Retail POS Offline Database Sync problem

(0) ShareShare
ReportReport
Posted on by Community Member

Hi,

  Error getting while trying to sync offline database with channel database the error says

System.AggregateException: One or more errors occurred. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Retail.Offline.Sync.SyncWorker.HandleConflict(DbApplyChangeFailedEventArgs e)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.OnApplyChangeFailed(DbApplyChangeFailedEventArgs value)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.GetConflictAction(DbSyncConflict conflict, Exception error, IDbTransaction transaction)
   at Microsoft.Synchronization.Data.ChangeHandlerBase.ApplyChange(FailedDeleteDelegate_type failedDeleteDelegate)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChangesInternal(DbSyncScopeMetadata scopeMetadata, IDbTransaction transaction, FailedDeleteDelegate_type failedDeleteDelegate, DataSet dataSet, ChangeApplicationType applyType)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, IDbTransaction applyTransaction, DataSet dataSet, DbSyncSession DbSyncSession, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.SingleTransactionApplyChangesAdapter.Apply(DataSet dataSet, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, DataSet dataSet, DbSyncSession dbSyncSession, Boolean commitTransaction)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ProcessChangeBatch(ConflictResolutionPolicy resolutionPolicy, ChangeBatch sourceChanges, Object changeDataRetriever, SyncCallbacks syncCallbacks, SyncSessionStatistics sessionStatistics)
   at Microsoft.Synchronization.KnowledgeProviderProxy.ProcessChangeBatch(CONFLICT_RESOLUTION_POLICY resolutionPolicy, ISyncChangeBatch pSourceChangeManager, Object pUnkDataRetriever, ISyncCallback pCallback, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, ChangeDataAdapter callbackChangeDataAdapter, SyncDataConverter conflictDataConverter, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncDataConverter sourceConverter, SyncDataConverter destinationConverter, SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScope(RETAILOFFLINESCOPE scope)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.<>c__DisplayClass6.<SynchronizeScopesParallel>b__4(RETAILOFFLINESCOPE scope)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass42_0`2.<PartitionerForEachWorker>b__1()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object )
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Parallel.PartitionerForEachWorker[TSource,TLocal](Partitioner`1 source, ParallelOptions parallelOptions, Action`1 simpleBody, Action`2 bodyWithState, Action`3 bodyWithStateAndIndex, Func`4 bodyWithStateAndLocal, Func`5 bodyWithEverything, Func`1 localInit, Action`1 localFinally)
   at System.Threading.Tasks.Parallel.ForEachWorker[TSource,TLocal](IEnumerable`1 source, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Action`3 bodyWithStateAndIndex, Func`4 bodyWithStateAndLocal, Func`5 bodyWithEverything, Func`1 localInit, Action`1 localFinally)
   at System.Threading.Tasks.Parallel.ForEach[TSource](IEnumerable`1 source, ParallelOptions parallelOptions, Action`1 body)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScopesParallel(ConfigurationDB db)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Service.SyncService.TimerTick(Object state)
---> (Inner Exception #0) System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Retail.Offline.Sync.SyncWorker.HandleConflict(DbApplyChangeFailedEventArgs e)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.OnApplyChangeFailed(DbApplyChangeFailedEventArgs value)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.GetConflictAction(DbSyncConflict conflict, Exception error, IDbTransaction transaction)
   at Microsoft.Synchronization.Data.ChangeHandlerBase.ApplyChange(FailedDeleteDelegate_type failedDeleteDelegate)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChangesInternal(DbSyncScopeMetadata scopeMetadata, IDbTransaction transaction, FailedDeleteDelegate_type failedDeleteDelegate, DataSet dataSet, ChangeApplicationType applyType)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, IDbTransaction applyTransaction, DataSet dataSet, DbSyncSession DbSyncSession, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.SingleTransactionApplyChangesAdapter.Apply(DataSet dataSet, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, DataSet dataSet, DbSyncSession dbSyncSession, Boolean commitTransaction)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ProcessChangeBatch(ConflictResolutionPolicy resolutionPolicy, ChangeBatch sourceChanges, Object changeDataRetriever, SyncCallbacks syncCallbacks, SyncSessionStatistics sessionStatistics)
   at Microsoft.Synchronization.KnowledgeProviderProxy.ProcessChangeBatch(CONFLICT_RESOLUTION_POLICY resolutionPolicy, ISyncChangeBatch pSourceChangeManager, Object pUnkDataRetriever, ISyncCallback pCallback, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, ChangeDataAdapter callbackChangeDataAdapter, SyncDataConverter conflictDataConverter, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncDataConverter sourceConverter, SyncDataConverter destinationConverter, SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScope(RETAILOFFLINESCOPE scope)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.<>c__DisplayClass6.<SynchronizeScopesParallel>b__4(RETAILOFFLINESCOPE scope)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass42_0`2.<PartitionerForEachWorker>b__1()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object )<---

---> (Inner Exception #1) System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Retail.Offline.Sync.SyncWorker.HandleConflict(DbApplyChangeFailedEventArgs e)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.OnApplyChangeFailed(DbApplyChangeFailedEventArgs value)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.GetConflictAction(DbSyncConflict conflict, Exception error, IDbTransaction transaction)
   at Microsoft.Synchronization.Data.ChangeHandlerBase.ApplyChange(FailedDeleteDelegate_type failedDeleteDelegate)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChangesInternal(DbSyncScopeMetadata scopeMetadata, IDbTransaction transaction, FailedDeleteDelegate_type failedDeleteDelegate, DataSet dataSet, ChangeApplicationType applyType)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, IDbTransaction applyTransaction, DataSet dataSet, DbSyncSession DbSyncSession, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.SingleTransactionApplyChangesAdapter.Apply(DataSet dataSet, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, DataSet dataSet, DbSyncSession dbSyncSession, Boolean commitTransaction)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ProcessChangeBatch(ConflictResolutionPolicy resolutionPolicy, ChangeBatch sourceChanges, Object changeDataRetriever, SyncCallbacks syncCallbacks, SyncSessionStatistics sessionStatistics)
   at Microsoft.Synchronization.KnowledgeProviderProxy.ProcessChangeBatch(CONFLICT_RESOLUTION_POLICY resolutionPolicy, ISyncChangeBatch pSourceChangeManager, Object pUnkDataRetriever, ISyncCallback pCallback, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, ChangeDataAdapter callbackChangeDataAdapter, SyncDataConverter conflictDataConverter, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncDataConverter sourceConverter, SyncDataConverter destinationConverter, SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScope(RETAILOFFLINESCOPE scope)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.<>c__DisplayClass6.<SynchronizeScopesParallel>b__4(RETAILOFFLINESCOPE scope)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass42_0`2.<PartitionerForEachWorker>b__1()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object )<---
System.AggregateException: One or more errors occurred. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Retail.Offline.Sync.SyncWorker.HandleConflict(DbApplyChangeFailedEventArgs e)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.OnApplyChangeFailed(DbApplyChangeFailedEventArgs value)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.GetConflictAction(DbSyncConflict conflict, Exception error, IDbTransaction transaction)
   at Microsoft.Synchronization.Data.ChangeHandlerBase.ApplyChange(FailedDeleteDelegate_type failedDeleteDelegate)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChangesInternal(DbSyncScopeMetadata scopeMetadata, IDbTransaction transaction, FailedDeleteDelegate_type failedDeleteDelegate, DataSet dataSet, ChangeApplicationType applyType)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, IDbTransaction applyTransaction, DataSet dataSet, DbSyncSession DbSyncSession, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.SingleTransactionApplyChangesAdapter.Apply(DataSet dataSet, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, DataSet dataSet, DbSyncSession dbSyncSession, Boolean commitTransaction)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ProcessChangeBatch(ConflictResolutionPolicy resolutionPolicy, ChangeBatch sourceChanges, Object changeDataRetriever, SyncCallbacks syncCallbacks, SyncSessionStatistics sessionStatistics)
   at Microsoft.Synchronization.KnowledgeProviderProxy.ProcessChangeBatch(CONFLICT_RESOLUTION_POLICY resolutionPolicy, ISyncChangeBatch pSourceChangeManager, Object pUnkDataRetriever, ISyncCallback pCallback, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, ChangeDataAdapter callbackChangeDataAdapter, SyncDataConverter conflictDataConverter, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncDataConverter sourceConverter, SyncDataConverter destinationConverter, SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScope(RETAILOFFLINESCOPE scope)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.<>c__DisplayClass6.<SynchronizeScopesParallel>b__4(RETAILOFFLINESCOPE scope)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass42_0`2.<PartitionerForEachWorker>b__1()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object )
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Parallel.PartitionerForEachWorker[TSource,TLocal](Partitioner`1 source, ParallelOptions parallelOptions, Action`1 simpleBody, Action`2 bodyWithState, Action`3 bodyWithStateAndIndex, Func`4 bodyWithStateAndLocal, Func`5 bodyWithEverything, Func`1 localInit, Action`1 localFinally)
   at System.Threading.Tasks.Parallel.ForEachWorker[TSource,TLocal](IEnumerable`1 source, ParallelOptions parallelOptions, Action`1 body, Action`2 bodyWithState, Action`3 bodyWithStateAndIndex, Func`4 bodyWithStateAndLocal, Func`5 bodyWithEverything, Func`1 localInit, Action`1 localFinally)
   at System.Threading.Tasks.Parallel.ForEach[TSource](IEnumerable`1 source, ParallelOptions parallelOptions, Action`1 body)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScopesParallel(ConfigurationDB db)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Service.SyncService.TimerTick(Object state)
---> (Inner Exception #0) System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Retail.Offline.Sync.SyncWorker.HandleConflict(DbApplyChangeFailedEventArgs e)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.OnApplyChangeFailed(DbApplyChangeFailedEventArgs value)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.GetConflictAction(DbSyncConflict conflict, Exception error, IDbTransaction transaction)
   at Microsoft.Synchronization.Data.ChangeHandlerBase.ApplyChange(FailedDeleteDelegate_type failedDeleteDelegate)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChangesInternal(DbSyncScopeMetadata scopeMetadata, IDbTransaction transaction, FailedDeleteDelegate_type failedDeleteDelegate, DataSet dataSet, ChangeApplicationType applyType)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, IDbTransaction applyTransaction, DataSet dataSet, DbSyncSession DbSyncSession, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.SingleTransactionApplyChangesAdapter.Apply(DataSet dataSet, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, DataSet dataSet, DbSyncSession dbSyncSession, Boolean commitTransaction)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ProcessChangeBatch(ConflictResolutionPolicy resolutionPolicy, ChangeBatch sourceChanges, Object changeDataRetriever, SyncCallbacks syncCallbacks, SyncSessionStatistics sessionStatistics)
   at Microsoft.Synchronization.KnowledgeProviderProxy.ProcessChangeBatch(CONFLICT_RESOLUTION_POLICY resolutionPolicy, ISyncChangeBatch pSourceChangeManager, Object pUnkDataRetriever, ISyncCallback pCallback, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, ChangeDataAdapter callbackChangeDataAdapter, SyncDataConverter conflictDataConverter, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncDataConverter sourceConverter, SyncDataConverter destinationConverter, SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScope(RETAILOFFLINESCOPE scope)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.<>c__DisplayClass6.<SynchronizeScopesParallel>b__4(RETAILOFFLINESCOPE scope)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass42_0`2.<PartitionerForEachWorker>b__1()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object )<---

---> (Inner Exception #1) System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Dynamics.Retail.Offline.Sync.SyncWorker.HandleConflict(DbApplyChangeFailedEventArgs e)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.OnApplyChangeFailed(DbApplyChangeFailedEventArgs value)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.GetConflictAction(DbSyncConflict conflict, Exception error, IDbTransaction transaction)
   at Microsoft.Synchronization.Data.ChangeHandlerBase.ApplyChange(FailedDeleteDelegate_type failedDeleteDelegate)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChangesInternal(DbSyncScopeMetadata scopeMetadata, IDbTransaction transaction, FailedDeleteDelegate_type failedDeleteDelegate, DataSet dataSet, ChangeApplicationType applyType)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, IDbTransaction applyTransaction, DataSet dataSet, DbSyncSession DbSyncSession, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.SingleTransactionApplyChangesAdapter.Apply(DataSet dataSet, Boolean commitTransaction, FailedDeleteDelegate_type failedDeleteDelegate, String batchFileName, ChangeApplicationAction& action)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ApplyChanges(DbSyncScopeMetadata scopeMetadata, DataSet dataSet, DbSyncSession dbSyncSession, Boolean commitTransaction)
   at Microsoft.Synchronization.Data.RelationalSyncProvider.ProcessChangeBatch(ConflictResolutionPolicy resolutionPolicy, ChangeBatch sourceChanges, Object changeDataRetriever, SyncCallbacks syncCallbacks, SyncSessionStatistics sessionStatistics)
   at Microsoft.Synchronization.KnowledgeProviderProxy.ProcessChangeBatch(CONFLICT_RESOLUTION_POLICY resolutionPolicy, ISyncChangeBatch pSourceChangeManager, Object pUnkDataRetriever, ISyncCallback pCallback, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.CoreInterop.ISyncSession.Start(CONFLICT_RESOLUTION_POLICY resolutionPolicy, _SYNC_SESSION_STATISTICS& pSyncSessionStatistics)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWaySyncHelper(SyncIdFormatGroup sourceIdFormats, SyncIdFormatGroup destinationIdFormats, KnowledgeSyncProviderConfiguration destinationConfiguration, SyncCallbacks DestinationCallbacks, ISyncProvider sourceProxy, ISyncProvider destinationProxy, ChangeDataAdapter callbackChangeDataAdapter, SyncDataConverter conflictDataConverter, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.DoOneWayKnowledgeSync(SyncDataConverter sourceConverter, SyncDataConverter destinationConverter, SyncProvider sourceProvider, SyncProvider destinationProvider, Int32& changesApplied, Int32& changesFailed)
   at Microsoft.Synchronization.KnowledgeSyncOrchestrator.Synchronize()
   at Microsoft.Synchronization.SyncOrchestrator.Synchronize()
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.SynchronizeScope(RETAILOFFLINESCOPE scope)
   at Microsoft.Dynamics.Retail.Offline.Sync.Synchronizer.<>c__DisplayClass6.<SynchronizeScopesParallel>b__4(RETAILOFFLINESCOPE scope)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass42_0`2.<PartitionerForEachWorker>b__1()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass176_0.<ExecuteSelfReplicating>b__0(Object )<---

*This post is locked for comments

  • Verified answer
    Community Member Profile Picture
    Community Member on at
    RE: Retail POS Offline Database Sync problem

    Hi All,

     I found the issue. The offline database schema was not matching with channel database. But Microsoft log is giving some misleading information :)

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Daivat Vartak – Community Spotlight

We are honored to recognize Daivat Vartak as our March 2025 Community…

Announcing Our 2025 Season 1 Super Users!

A new season of Super Users has arrived, and we are so grateful for the daily…

Kudos to the February Top 10 Community Stars!

Thanks for all your good work in the Community!

Leaderboard

#1
André Arnaud de Calavon Profile Picture

André Arnaud de Cal... 292,865 Super User 2025 Season 1

#2
Martin Dráb Profile Picture

Martin Dráb 231,723 Most Valuable Professional

#3
nmaenpaa Profile Picture

nmaenpaa 101,156 Moderator

Leaderboard

Featured topics

Product updates

Dynamics 365 release plans