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https://nishantrana.me/2016/08/17/fixed-cannot-add-a-root-component-00000000-0000-0000-0000-000000000000-of-type-20-because-it-is-not-in-the-target-system-error-while-importing-managed-solution-in-crm-2016/
Fixed: Cannot add a Root Component 00000000-0000-0000-0000-000000000000 of type 20 because it is not in the target system error while importing managed solution in CRM 2016