Site Recovery Manager plug-in is subject to limitations.
When working with the Site Recovery Manager plug-in, consider the following limitations:
You cannot create, edit, or delete recovery plans.
You cannot add or remove test network mapping to a recovery plan.
You cannot rescan storage to discover newly added replicated devices.
You cannot delete folder, network, and resource pool mappings.
You cannot delete protection groups.
You cannot customize IP settings by using the Site Recovery Manager plug-in.
The unassociateVms and unrotectVms methods are not available in the plug-in. You can use them by using the Site Recovery Manager public API.