The CSP import fails with the following error
[root@mn ~]# python readCSPAccounts.py --o365APS2-app-instance-id 16 --vendor-id 1000004 .. "Unable to prepare the import data because of error: The appropriate service plan can not be found."
The service plan with the required Microsoft offer is configured with more than 1 subscription period. Such plans are not supported for APS 1.2 - 2.0 account migration.
Or the service plan has "unlimited" set for it's max limit for the resource rates. Resource rate max limit should be valid limit.
Use a single subscription period for each Service Plan that is used in the import and make sure resource rates have valid max limit.