Active Directory groups are not migrated to SharePoint Online and the following error messages are found in the log:
The owner could not be found on the source. This is likely because this group is owned by a group which the migrating user does not have the rights to view.
The group's owner has been set to itself.
Warning:
Exception thrown: An error occurred during the operation of a service method: Exception of type 'System.ArgumentException' was thrown.
Parameter name: encodedValue
The Active Directory group must be mapped to a valid Azure AD security group in Microsoft 365.
1. Create an XML mapping file to map source AD group names to the friendly name of the target groups as shown below:
OR
If mapping to friendly names in Azure AD don't work, please try mapping to Object ID's in Azure AD. Sample entries are given below
2. Import the XML mapping file in 'Configure Global Mapping' options under the 'Settings' tab (in Ribbon) as explained here
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