Certain Administrate operations can be composite operations. That is, a single request can perform multiple administrative tasks, such as CreateGroup, DeleteUser, and CreateRole. In general, the operations you can group into a single message are those that create, update, or delete an item in an Encyclopedia volume.

A transaction is a composite operation identified in the Transaction element of the schema. If a failure occurs anywhere in the transaction sequence, all operations in the transaction fail.

The following example shows a composite request to add a user, Kevin Neery, to three groups. The groups are identified by their iHub-generated ID numbers in the IdList element.