Keep in mind the following considerations as you work with tenant groups:
When you initially create a group, the group has no tenants. You can take a table from an existing tenant's schema and add it to the group.
You cannot add a tenant to a group if the tenant's partitions are already allocated.
Once you assign a tenant to a group, that tenant can no longer access any data in the tenant's partition for the table partition associated with the group. In other words, the tenant can have only one partition for each given table.
A tenant can belong to more than one group but cannot belong to two groups for the same table.
Removing a tenant from a group restores the tenant's unique partition information for that table based on the defaults that are set up in the tenant record.
When you initially create a group, the group has no tenants. You can take a table from an existing tenant's schema and add it to the group.