Domain Migration Administrator 7.x
Error: 'This operation is only allowed on the primary domain controller of the domain.'
Error: 'E21306: CopyProperties failed for CN=Account. hr=0x800708b2 This operation is only allowed on the primary domain controller of the domain.'
The option to disable the source account was selected during migration and DMA has connected to a BDC rather than the PDC. This is typically a result of use of the Server Override as described in the following knowledge base article:
Which Domain Controller does Domain Migration Administrator (DMA) connect to and pull the information from when doing a migration?
If you have used the server override account previously and pointed DMA to a BDC, either remove the override account or update DMA to point to the PDC.