Troubleshooting IMAP Migrations to Office 365

Hi Mirela_Buru 

We have another problem doing a migration from an on-premises IMAP server to Exchange Online, and we are getting several errors from the batches being migrated:

1st Error:
Error: UserAlreadyBeingMigratedException: The user ‎'*** Email address is removed for privacy ***‎' already has a pending request. Please remove the existing request and resume the current batch or start a new batch for this user. --> Name must be unique per owning mailbox. There‎'s already a request with the name ‎'Simple Migration Merge Request‎' owned by mailbox ‎'AMPR01A009.PROD.OUTLOOK.COM/Microsoft Exchange Hosted Organizations/xxxxx.onmicrosoft.com/**email account removed**‎'

Tried with this resolution:
PS C:\WINDOWS\system32> Get-MoveRequest -Identity '***email removed****'

Couldn't find a move request that corresponds to the specified identity '***email removed****'.

+ CategoryInfo : NotSpecified: (:) [Get-MoveRequest], ManagementObjectNotFoundException

+ FullyQualifiedErrorId : [Server=SN6PR01MB5168,RequestId=3963635d-d8ed-4793-bc15-dd495bcc5440,TimeStamp=10/5/2020

4:49:43 PM] [FailureCategory=Cmdlet-ManagementObjectNotFoundException] 595D492,Microsoft.Exchange.Management.Migr

ation.MailboxReplication.MoveRequest.GetMoveRequest

+ PSComputerName : outlook.office365.com

If we try with:

PS C:\WINDOWS\system32> $syncstats = Get-SyncRequestStatistics ***email removed**** -IncludeReport -DiagnosticInfo verbose

PS C:\WINDOWS\system32> $syncstats.DiagnosticInfo

<Job>

<SkippedItemCounts Corrupt="0" Missing="0" Large="0" Other="0" />

<context>

<C K="BatchName" V="MigrationService:LOTE TIC + DEPARTAMENTALES" />

<C K="DatabaseGuid" V="1d34703a-234c-4329-a0dd-27b4a6d175c6" />

<C K="DatabaseName" V="NAMPR01DG361-db007" />

<C K="EmailAddress" V="***email removed****" />

<C K="FatalFailureRetryCount" V="0" />

<C K="JobFeatures" V="BinaryJobFeatures, UseRequestGuidForMoveReport" />

<C K="MailboxGuid" V="777ee8f4-b0f4-4a97-abfa-0f45562a202f" />

<C K="OrganizationName" V="xxxxxxx.onmicrosoft.com" />

<C K="RecipientTypeDetails" V="UserMailbox" />

<C K="RemoteServerName" V="xxxxxxxxxxx" />

<C K="RequestCreatedTimestamp" V="10/5/2020 12:57:49 PM" />

<C K="RequestFlags" V="CrossOrg, Pull, Suspend" />

<C K="RequestGuid" V="fbeeee80-228a-4df2-a29e-b4d8c393ef34" />

<C K="RequestInternalFlags" V="SkipKnownCorruptions,UseDataConsistencyScore" />

<C K="RequestJob" V="lem\IMAP:***email removed****" />

<C K="RequestLastSuccessfulSyncTimestamp" V="10/5/2020 1:11:09 PM" />

<C K="RequestState" V="Canceled" />

<C K="RequestStatus" V="Suspended" />

<C K="RequestStyle" V="CrossOrg" />

<C K="RequestType" V="Sync" />

<C K="RequestWorkloadType" V="Onboarding_IMAP" />

<C K="SyncProtocol" V="Imap" />

<C K="UserRamp" V="80" />

...

We get that the email is associated with an old batch but we cannot delete or remove that old batch, tried creating a new batch and removing it from there but it didn't affect.

2nd Error:
Error: MigrationPermanentException: El nombre debe ser diferente para cada buzón. Ya existe una solicitud con el nombre ‎'IMAP:***email removed****‎' que pertenece al buzón ‎'NAMPR01A009.PROD.OUTLOOK.COM/Microsoft Exchange Hosted Organizations/xxxxxxxxx.onmicrosoft.com/NAME‎'. --> El nombre debe ser diferente para cada buzón. Ya existe una solicitud con el nombre ‎'IMAP:***email removed****‎' que pertenece al buzón ‎'NAMPR01A009.PROD.OUTLOOK.COM/Microsoft Exchange Hosted Organizations/xxxxxxxxx.onmicrosoft.com/NAME‎'.

For the 2nd error we don't get any clear reason on why it's failing besides the log information.

Please advise,