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Use the Container option for system columns

System columns guide

Use the Container option to identify the group membership identifier that NIM uses in role models.

What the Container option does​

Use the Container option to identify the column in a membership table that points to the group or container record. NIM uses that identifier to associate a membership with the correct group when building role models.

This setting is useful when a table describes a relationship rather than a standalone object. Select the column that contains the identifier for the group, not the identifier for the member.

Example: Exchange Online distribution group membership​

In Microsoft Exchange Online, the DistributionGroupMembers table records group memberships:

  • GroupGuid references the group in the DistributionGroups table.
  • Guid references the member in the Mailboxes table.

Select GroupGuid as the Container column because it identifies the group to which each membership belongs.

Configure a Container column​

  1. Open the relevant system table and select the Columns tab.
  2. Identify the column that references the group or container table.
  3. Select that column’s Container option.
  4. Save the table configuration.
tip

Before setting a Container column, confirm which column identifies the group and which identifies the member. Choosing the member identifier will associate memberships with the wrong side of the relationship.