Data migration service error codes

You might encounter the following error codes when using the data migration service.

For information on error messages you might find when using the data migration service, go to Data migration service error messages.

Error code Details and troubleshooting
11001 Invalid request or response. Verify the steps in Migrating from an Exchange Web Services environment (Microsoft Exchange 2007 and later).
11002 Invalid response from the Exchange server. Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11003 Verify the Exchange URL is valid. For details, go to Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11004 This error might be temporary. Confirm you can connect to the Exchange server using the Microsoft Remote Connectivity Analyzer tool.
11007 Confirm you can connect to the Exchange server using the Microsoft Remote Connectivity Analyzer tool.
11008 Invalid response while reading from the Exchange server. Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11009 The data migration service is operating at a rate that exceeds the limits of the source system. To resolve this, adjust the migration speed. Make sure the source server can handle the number of connections you select.
11010 The Exchange mailbox is invalid or turned off. Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11011 Invalid Exchange folder or insufficient permissions to access the folder. Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11012 Error connecting to the Exchange server. Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11013 Error communicating with the Exchange server. Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11016 Check the impersonation rights of the role account. For details, go to Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11017 Turn on the account on the Exchange server and try again.
11018 The Exchange server reports one of the folders in the mailbox is corrupt and cannot be migrated.

To resolve this, consult your Exchange documentation to fix the corrupted folder. Then, verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).

11019 The Exchange server reports some or all data in the mailbox is corrupt and cannot be migrated.

To resolve this, consult your Exchange documentation to fix the corrupted data. Then, verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).

11020 Verify the user exists in Microsoft Active Directory. Then, verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11021 Your administrator account does not have the correct impersonation permissions. Check the impersonation settings. For details, go to Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11022 Your administrator account does not have the correct impersonation permissions on the Client Access server. Check the Exchange impersonation settings. For details, go to Migrating from an Exchange Web Services environment (Exchange 2007 and later).
11023 There was an unexpected error when Google tried to authenticate to the Exchange server. This error indicates one of the following issues:
  • The service account running the Exchange Web Services (EWS) application pool is set up incorrectly.
  • EWS can't talk to the directory.
  • A trust between forests is set up incorrectly.

Try the troubleshooting steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).

11024 Your Exchange virtual directory has not been set. Consult your Microsoft documentation for further information on creating a virtual directory.
11025 Verify the EWS URL you provided is accessible using the Microsoft Remote Connectivity Analyzer tool. Then, start the migration again.
11026 The SSL certificate is not installed or is installed incorrectly on your legacy server. For details, go to Set up your TLS certificate.
11028 Internal server error because the source server is busy. This error is temporary.

If the issue persists, it might be the data migration service is operating at a rate that exceeds the limits of the source system. To resolve this, adjust the migration speed. Make sure the source server can handle the number of connections you select.

12001 The user might have been deleted from G Suite while the migration was running. Check the user and start the migration again.
13001 Internal server error. Try exiting and restarting the migration.
13002 Internal authentication error. Try exiting and restarting the migration.
13008 Internal communication error. Try exiting and restarting the migration.
15005 Usually a temporary error. The migration should start normally after initializing. If the issue persists, contact G Suite support.
15008 Internal server error. Try exiting and restarting the migration. If the issue persists, contact G Suite support.
15011 Internal connection error. Problem communicating with the source mail server. Verify the steps in your migration.
15012 Usually a temporary error. Stop the migration, wait 5 minutes, and restart.
15014 The number of source folders exceeds the number of labels allowed in Gmail. Reduce the number of folders and try again. For more details about Gmail labels, go to Create labels to organize Gmail.
15024 Draft and Sent folder not found. Check the IMAP visibility of the Draft and Sent folders on your legacy server and try again.
17008 Internal error. Try exiting and restarting the migration.
17009 Generating an access token with the supplied credentials was unsuccessful. The authentication might have expired. Exit and restart the migration. Complete the steps in Migrate email to G Suite with the data migration service.
18001 The data migration service is operating at a rate that exceeds the limits of the source system. To resolve this, adjust the migration speed. Make sure the source server can handle the number of connections you select.
18002 Failed to open the IMAP folder. Verify the steps in Prepare your legacy environment.
18003 Temporary error. It might help to increase the number of parallel connections to the source server.
18004 Failed to connect to the IMAP mailbox. Verify the steps in Prepare your legacy environment.
18005 The message format contains an invalid MIME format, and it can't be imported into Gmail. As a workaround, manually forward the message from the source mailbox to the target mailbox.
18006
18010
The IMAP server is busy. This error is temporary.
18011 The data migration service cannot read data from an IMAP folder. The folder might be corrupted.
18014 The default personal namespace of the user is set incorrectly. If the server supports the IMAP4 namespace extension, make sure the default personal namespace is set correctly. For details, consult your IMAP server documentation.
18015 The data migration service couldn't connect to the source Gmail account. Verify you've completed the personal Gmail account setup steps and try again.
18016 IMAP is turned off for the source Gmail account. For details on how to turn on IMAP, go to the personal Gmail account setup steps.
18017

Invalid IMAP credentials. Check the username and password before you proceed.

If you're migrating from an existing G Suite account, verify you've completed the existing G Suite account setup steps.

If you're migrating from a personal Gmail account (ending with @gmail.com), verify you've completed the personal Gmail account setup steps. Migrations from Gmail require you to generate an authorization code. If the supplied code has expired, you might need to reauthorize it.

19005 Verify the migration client has enough permissions to read and write the user's contacts.
19007 The user has exceeded their personal external contacts storage limits.
19008 G Suite user account is deleted. Verify whether the user account should be deleted and rerun the migration.
21004 Error uploading message. If several attempts are unsuccessful, the message will not migrate.
21010 Gmail service isn't turned on for the user. Turn POP and IMAP on and off for users in G Suite.
25002 Internal server error. Try exiting and restarting the migration.
26001 Verify the steps in Migrating from an Exchange Web Services environment (Exchange 2007 and later).
26003 Email with attachments larger than 25 MB (total message body exceeds 35,882,577 bytes) can't be migrated.
26007 Inconsistent folder listings from Exchange server. Try running the migration while the server is not in use. If the issue persists, do an IMAP migration using the steps in Migrating from an IMAP server.
27004 There is an invalid entry in your mapping of calendar event attendees. Fix the entry and restart the migration. For details, go to Use CSV files with the data migration service.
27005 The calendar that owns the event hasn't been migrated to G Suite. Contact G Suite support.
27006 The event might be corrupt or missing required details.
27007 The secondary calendar could not be created in G Suite.
27008

Events didn't migrate because the participant isn't an attendee or organizer of the event. To troubleshoot this issue:

  • Check the ICS file from the source account and make sure the migrated user is a participant of the event.
  • Check if the user has aliases on the source server that don't exist in G Suite. If the aliases are missing, add them to G Suite

 

For error codes not listed here, contact G Suite Support.

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