The restartService command restarts the services on an environment. This command is useful when you want to refresh an environment after performing maintenance tasks such as importing or exporting snapshots or uploading files. Reference: Using EPM Automate Commands - Oracle Help Center2

"The Custom Validation Report lists all manually created validations across all applications. For each validation, it shows: The actions and properties that trigger the validation check; The node types where it applies; The severity level; The message text." The other items are not information that you can find in the Custom Validation Report.

The Data Manager permission is the second highest level of permission that can be assigned to an application. Users with the Data Manager permission can perform various tasks such as: import, export, and update data for all dimensions in the application, create and submit requests for dimensions in the application, manage viewpoints and viewpoint subscriptions for all dimensions in the application, run business rules on dimensions in the application, copy data across dimensions in the application, etc. Users with the Data Manager permission cannot manage the application's node sets, hierarchy sets, and node types, because these are data objects that require Owner permission to manage. Users with the Data Manager permission cannot assign permissions for the application data, because this requires Owner permission as well. Reference: Working with Permissions - Oracle Help Center1; Working with Requests - Oracle Help Center3

"A node is an instance of a node type that represents a member in a hierarchy. A node has properties that describe its characteristics and behavior. There are three types of properties for nodes: Node properties; Relationship properties; Inherited properties." The other options are not types of properties for nodes.

According to the Oracle Help Center, migration snapshots are used to migrate application artifacts and data between environments, such as refreshing the test environment from the production environment. Migration snapshots can also be used to restore the artifacts and data to the snapshot state in case of any issues or errors. The other reasons are not valid for creating a migration snapshot.