Data migration service error codes

You might encounter the following error messages when using the data migration service. Contact G Suite Support for any error codes not listed here.

 

Error code Details and troubleshooting
11001 Invalid request or response. Verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11002 Invalid response from the Exchange server. Verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11003 Verify that the Exchange URL is valid. For details, see Migrating from an EWS environment (Exchange 2007 and later).
11004 This error might be temporary. Confirm that you can connect to the Exchange server using the Microsoft Remote Connectivity Analyzer.
11007 Confirm that you can connect to the Exchange server using the Microsoft Remote Connectivity Analyzer.
11008 Invalid response while reading from the Exchange server. Verify the steps in Migrating from an EWS 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 that the source server can handle the number of connections that you select.
11010 The Exchange mailbox is invalid or disabled. Verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11011 Invalid Exchange folder or insufficient permissions to access the folder. Verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11012 Error connecting to the Exchange server. Verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11013 Error communicating with the Exchange server. Verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11016 Check the impersonation rights of the role account. For details, see Migrating from an EWS environment (Exchange 2007 and later).
11017 Enable the account on the Exchange server and try again.
11018 The Exchange server reports that one of the folders in the mailbox is corrupt and cannot be migrated.

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

11019 The Exchange server reports that some or all of the 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 EWS environment (Exchange 2007 and later).

11020 Verify that the user exists in Microsoft Active Directory. Then, verify the steps in Migrating from an EWS environment (Exchange 2007 and later).
11021 Your administrator account does not have the correct impersonation permissions. Check the impersonation settings. For details, see Migrating from an EWS environment (Exchange 2007 and later). 
11022 Your administrator account does not have the correct impersonation permissions on the Client Access server. Check the impersonation settings. For details, see Migrating from an EWS 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 EWS application pool is configured incorrectly.
  • EWS can't talk to the directory.
  • A trust between forests is configured in correctly.

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

11024 Your Exchange virtual directory has not been set. Consult your Microsoft documentation for further information on setting a virtual directory. 
11025 Verify that the EWS URL you provided is accessible using the Microsoft Remote Connectivity Analyzer. Then, start the migration again.
11026 The SSL certificate is not installed or installed incorrectly on your legacy server. For details, see Set up your TSL (SSL) certificates.
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.
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 information about Gmail labels, see Create labels to organize Gmail.
17008 Internal error. Try exiting and restarting the migration. 
17009 Generating an access token with the supplied credentials has failed. The authentication might have expired. Exit and restart the migration. Complete the steps in Migrate from Gmail to G Suite.
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 that the source server can handle the number of connections that you select.
18002 Failed to open the IMAP folder. Verify the steps in Migrating from an IMAP server.
18003 This is a 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 Migrating from an IMAP server.
18005 The message format contains 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 usually 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 that the default personal namespace is set correctly. For details, consult your IMAP server documentation.
18016 IMAP is not enabled for the source Gmail account. For details on how to enable IMAP, see the Gmail consumer account setup steps.
18015 The data migration service couldn't connect to the source Gmail account. Verify the Gmail consumer account set up steps and try again
18017 Invalid IMAP credentials. If you're using single sign-on (SSO) or 2-Step Verification (2SV), use a G Suite-stored password or generate an app password.

If you are not using SSO or 2SV, check the username and password. If the credentials are correct, verify the Gmail consumer account setup steps. For migrations from Gmail, provide an authorization code. If you've already done so, you may need to reauthorize if the supplied authentication has expired.

19005 Verify that the migration client has enough permissions to read and write the user's contacts.
19007 The user has exceeded their personal 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 fail, the message will fail to migrate.
21010 Gmail service isn't enabled for the user. Enable IMAP and POP for G Suite for the user.
25002 Internal server error. Try exiting and restarting the migration. 
26001 Verify the steps in Migrating from an EWS 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.
27004 There is an invalid entry in your mapping of calendar event attendees. Fix the entry and restart the migration. For details, see 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.

 

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