Question

I have been trying to create a new Site Collection in SharePoint 2013 or later through Metalogix Content Matrix but I have been encountering issues. Why is this happening? and what can I do about it?

Answer

Starting with SharePoint 2013, most web applications use claims authentication, but the Central Administration web application that manages the server level settings uses Classic authentication. When Metalogix Content Matrix Console connects to a SharePoint server it has to authenticate through a web application. When connected to a SharePoint 2013 or later web application that uses Claims authentication, SharePoint itself can have trouble recognizing that the accessing User account has permissions in the web application areas that are managed by Classic authentication. This is also true if connected to a web application that uses Classic authentication, if trying to access an area managed by Claims authentication.

In SharePoint 2013 and later, the permissions to create Site Collections is managed by Classic authentication, so if connected through a Claims authentication web application users will receive a "401 Unauthorized" error message when trying to create a new Site Collection. This happens even if the user account has all of the appropriate permissions. If connecting through a Classic authentication web application, users will receive permission errors when trying to set any settings on a Site Collection that uses a Claims authentication web application, after the Site Collection is created.

Possible Errors when Creating Site Collection in SharePoint 2013 or later

Below is a list of errors (and their explanations) that you might encounter when trying to create Site Collections in SharePoint through Metalogix Content Matrix Console.

·Error Message 1 - Unable to obtain Web Application '<web application name>'.
Explanation/Resolution - Metalogix Content Matrix is unable to find the web application. This should not occur unless a serious issue within SharePoint has occurred from the time the Site Collection configuration dialog was displayed, and the call to the Metalogix Extensions Web Service (for remote OM connections) was made to perform the Site Collection creation. Check your SharePoint environment, and resolve any issues. Then try again.

·Error Message2 - Migrating user '<migrating user>' requires explicit Full Control on the web application where the site collection is intented to be created. If the migrating user is a member of the Farm Administrators group then connect to the Central Administration site and try again.
 
Explanation/Resolution - The migrating user has read permissions on the web application (using a farm or web connection type) that they're connected to, but does not have full control on the web application that they are trying to create the Site Collection in. To resolve this, the migrating user account must be added explicitly (by name) with Full Control to the respective Web Application that they are trying to create the site collection in. They can also create a Site Collection within any web application if they are a member of the Farm Administrator group in SharePoint, and they are connected to Central Administration as a farm connection.

Question

Why is it that when I migrate a wiki page that has been modified using SharePoint Designer (SPD),  web part zones and web parts are not preserved on the target?

Answer

To be able to migrate web part zones and web parts that were added using SPD:

·the SharePoint source version and the source connection type must support customized wiki page migration

AND

·the Configuration Key AllowCustomizedWikiPageMigration in the ApplicationSettings.xml file must be set to True.

Supported Source SharePoint Versions and Connection Types

You can migrate custom web part zones and web parts added using SPD for the following SharePoint versions and connection types on the source.

NOTE:  Currently, customized wiki page migration is not supported for a SharePoint 2016 or SharePoint 2019 source.

Adding a Configuration Key to Allow Customized WikiPage Migration

If you want to migrate Customized wiki pages instead of treating them as normal wiki pages for which source content will not be preserved at the target after migration, you can add the Configuration Key AllowCustomizedWikiPageMigrationto the ApplicationSettings.xml file manually (ideally after the Configuration Key EnableSslForEmail) and set the value to True.

Question

Is it possible to Preserve SharePoint list item IDs when migrating to SharePoint Online?

Answer

Yes, it is possible to preserve SharePoint list item IDs when migrating content to a SharePoint Online target.

Item IDs and Document IDs are a little different in SharePoint (not the SharePoint 2010 or 2013 Document ID feature), and this means that how they can be accessed through a CSOM connection is a little different. There are some limitations that can be encountered when trying to preserve Item IDs that are dependent on the connection type. There are three basic connection types that we need to keep in mind when looking at these limitations. They are:

·Local or Remote OM (Object Model) Connection - This connection type is made either when the Metalogix Content Matrix Console client application is installed directly on the target SharePoint server, or a remote connection is made using the Metalogix Extensions Web Service. When this type of connection is made, Metalogix Content Matrix will be able to directly set the list item ID value in SharePoint through the Object Model. This value can be set as long as that specific value is not already being used by another list item.

·SharePoint CSOM (Client Side Object Model) or Office 365 Tenant Connection - This connection type is made when remotely connecting to a SharePoint Online environment. When connected to SharePoint Online using a CSOM connection, Metalogix Content Matrix cannot directly set the list item ID value so another method must be used instead. The CSOM method for preserving the list item ID value is for Metalogix Content Matrix to create a temporary item and then deleting it. This creation and deletion process is done in batches and each item that is added will increment the ID value by 1. This will continue until the Metalogix Content Matrix reaches the necessary item ID value. If the target ID value is already in use, or if another item with a higher ID value exists in the list, then the item(s) will be added to the end of the target list (and not at its ID value). There are a few limitations to this method:

oOlder items that are placed into newer folders - The general case for this is if an older item, that has a lower ID number value is moved and placed into a folder that was more recently created (and has a higher ID number value). In this case, the items with the lower ID number values will be added after the folder is created, so their ID number values will not be preserved. For example, if a list item with an ID value of "12" is moved into a folder, and the folder has an ID value of "25". In this case the ID value for the item will not be preserved because the folder it is located in will not be created until ID 25 is created. So Metalogix Content Matrix will hold onto the item until the folder is created and then add it, but because the item ID has already been passed, its value cannot be preserved, and it will be given a new value by SharePoint after all other items have been added.

oLists containing default data - The general case for this scenario is when a SharePoint list (and not a Document Library) is created and SharePoint automatically adds a number of items (one or multiple) by default into that list. The default items that are created by SharePoint will also automatically be assigned an item ID value by SharePoint. When migrating this type of list their data will be deleted before the source content is migrated. The default added items will have ID values associated with them, and when the items are deleted those ID values will no longer be available, and Metalogix Content Matrix won't be able to track what the values were associated to. This can interfere with the ID value calculations that are made, and throw off the ID values that are being set during migration.
 
The most common place where users can see default list items created is when an "Announcements" list is created. Announcement list that are created by SharePoint will automatically create one item by default that is the "Welcome" message. However, when migrating with Metalogix Content Matrix and using the override option, users should not see this issue with Announcement lists because Metalogix Content Matrix will delete the list that is created by the site template, and create a new one. When the new list is created Metalogix Content Matrix is able to add the list items directly, and allows for the list item ID value to be set in the process. This is more likely to be an issue with SharePoint lists that have had their template modified to automatically generate a set of default items.

NOTE: When migrating SharePoint Task lists to SharePoint Online, it is recommended that the Preserve IDs on items/folders in Lists option is selected. This is to help preserve the Related Items property for items in the Task list. If unchecked there is a small chance that the Related Items property may list incorrect files, because some of these files may be referred to through the Item ID value.

Question

When I try to migrate some of my content into O365 using a SharePoint CSOM or Office 365 Tenant connection type, and this content contains a large Document Library, I see that some of my documents fail to migrate. The logs for the failure indicate that a "HTTP 500 - Internal Server Error" was thrown. What is the cause of this? And how can I fix it?

Answer

There is a potential issue when migrating specifically to SharePoint Online where users can encounter an "HTTP 500" error. This is caused by a combination of the CSOM/Tenant connection adapter and SharePoint's document upload methods. To help resolve this issue there is a document retry feature that can be configured. This retry feature will attempt to upload the document(s) into the SharePoint Online  target, and depending on the configured setting, will attempt to retry the upload process if it fails or times-out on the initial try.

The below steps will explain how to enable and configure this retry setting.

NOTE: This retry method is only meant for migrating to SharePoint Online targets. If you are migrating to an on premises target, then this retry feature will not benefit you since it makes use of O365 specific methods.

1.Make sure that the Metalogix Content Matrix client application is closed.

2.In the file system that the Metalogix Content Matrix Console client application is installed on, navigate to the the appropriate file location:

·If you are required to be a local administrator on the machine where Content Matrix is installed:  C:\ProgramData\Metalogix

OR

·If you are not required to be a local administrator on the machine where Content Matrix is installed: C:\Users\<username>\AppData\Roaming\Metalogix\Common

3.In this location there should be an EnvironmentSettings.xml file. Open this file in an editor program. For example, Notepad, etc.

4.There are two variables that will need to be modified in order for the retry method to work. They are:

·CSOMDocumentRetriesNumber - This value determines the number of times that Metalogix Content Matrix will make another attempt to upload/migrate any document(s) that has failed the initial document upload try, when migrating to a SharePoint Online CSOM target.

·CSOMDocumentRetriesDelay - This value determines the amount of time, in seconds (s), that Metalogix Content Matrix will wait before starting a document upload retry, and is based on the above ("CSOMDocumentRetriesNumber") variable.

NOTE: The default values for these two variables will be set as "0". Users can set these values as desired, based on what works best for their environment.

5.After the desired values have been entered in the two variables, save and close the file.

6.Restart the Metalogix Content Matrix client application. The changes should now be in Metalogix Content Matrix Console, and used when running any migration to a SharePoint Online target environment.

After these values have been set and the client application has been restarted, any documents that fail on the initial migration attempt we be retried.

IMPORTANT:  If these steps do not resolve the issue and you are using the Import Pipeline for the migration, the error may be pipeline-related.  See "Error, the batch will be resubmitted" Message Displays When Using the Import Pipeline for details.