Failed to export to AD

I have the below error when trying to export to AD. It may be due to the exporting volume.

20180121,00:00:00,UNIFY Identity Broker,Logging Engine,Information,Log file started.,Minimal
20180121,00:16:39,UNIFY Identity Broker,Link,Error,"Request to sync changes on link failed.
Request to sync changes on link AD Link (4a76f3ba-6c07-4d9a-9f96-c7dc14fff2e6) in direction incoming failed with message Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. [Count:158178]. Duration: 00:16:54.0665482
Error details:
System.Data.SqlClient.SqlException (0x80131904): Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TrySetMetaData(_SqlMetaDataSet metaData, Boolean moreInfo)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
   at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
   at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
   at System.Data.Linq.DataQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Unify.Framework.Data.LinqWhereQuery`5.GetEnumerator()
   at Unify.Product.Plus.LinkSynchronizer`2.<ProcessFilters>d__10.MoveNext()
   at Unify.Product.Plus.JoinExecutor`2.Execute(IEnumerable`1 sourceEntities, IQueryable`1 targetEntities)
   at Unify.Product.Plus.LinkSynchronizer`2.JoinAndMap(IEnumerable`1 filterResult, IDictionary`2 changesDict)
   at Unify.Product.Plus.Link.SynchronizeLockerChanges(IEnumerable`1 changes)
   at Unify.Framework.Notification.NotifierDecoratorBase.Notify[TResult](ITaskNotificationFactory notificationFactory, Func`1 function)
   at Unify.Product.Plus.LinkAuditingDecorator.SynchronizeLockerChanges(IEnumerable`1 changes)
   at Unify.Product.Plus.LockerToAdapterSynchronizationJob.RunBase()
   at Unify.Product.Plus.SynchronizationJobExecutor.<ThreadAction>d__8.MoveNext()
ClientConnectionId:d630c91c-5b93-44fe-ad1a-8e0b6dc2d624
Error Number:-2,State:0,Class:11",Normal
20180121,00:16:39,UNIFY Identity Broker,SyncEngine,Information,"Request to sync locker to adapter errored.
Synchronization job failed syncing 158178 changes on the 'AD Link' link from the locker to adapter with the reason Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding.. Job ID: acf66fc4-57f8-47ae-8baf-fd121dee8efa Duration: 00:16:54.0665482
Error details:
System.Data.SqlClient.SqlException (0x80131904): Timeout expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TrySetMetaData(_SqlMetaDataSet metaData, Boolean moreInfo)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
   at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
   at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
   at System.Data.Linq.DataQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Unify.Framework.Data.LinqWhereQuery`5.GetEnumerator()
   at Unify.Product.Plus.LinkSynchronizer`2.<ProcessFilters>d__10.MoveNext()
   at Unify.Product.Plus.JoinExecutor`2.Execute(IEnumerable`1 sourceEntities, IQueryable`1 targetEntities)
   at Unify.Product.Plus.LinkSynchronizer`2.JoinAndMap(IEnumerable`1 filterResult, IDictionary`2 changesDict)
   at Unify.Product.Plus.Link.SynchronizeLockerChanges(IEnumerable`1 changes)
   at Unify.Framework.Notification.NotifierDecoratorBase.Notify[TResult](ITaskNotificationFactory notificationFactory, Func`1 function)
   at Unify.Product.Plus.LinkAuditingDecorator.SynchronizeLockerChanges(IEnumerable`1 changes)
   at Unify.Product.Plus.LockerToAdapterSynchronizationJob.RunBase()
   at Unify.Product.Plus.SynchronizationJobExecutor.<ThreadAction>d__8.MoveNext()
ClientConnectionId:d630c91c-5b93-44fe-ad1a-8e0b6dc2d624