User Guide Authorization Boundaries

User Guide: Authorization Boundaries

An authorization boundary represents the system you are getting authorized — roughly one ATO. It is the hub that ties together your environments, team, and all of the OSCAL documents (SSP, SAP, SAR, POA&M, evidence) for that system. This guide covers creating and managing boundaries, their environments and members, recording leveraged authorizations, and assembling an ATO package.

Who this is for: ISSOs, system owners, and anyone coordinating an authorization. Creating and editing boundaries requires the appropriate role — see RBAC. Instance Admins can also manage boundaries under Administration (see Administration).

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Before you start

• Access: a role that permits viewing/editing authorization boundaries.
• Where to find it: Authorization Boundaries in the top nav (/authorization_boundaries), or expand an organization in the left sidebar.

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At a glance

flowchart TD
    AB[Authorization Boundary] --> ENV[Environments]
    AB --> MEM[Team members + roles]
    AB --> LEV[Leveraged authorizations]
    AB --> DOCS["SSP / SAP / SAR / POA&M / Evidence"]
    DOCS --> ATO[ATO Package wizard]
    ATO --> ZIP[Downloadable ATO archive]

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Primary use cases

• Stand up a new system for authorization — create the boundary, define its environments, and add the team.
• Record inherited controls from a leveraged system (e.g. a FedRAMP-authorized cloud service) via a leveraged authorization.
• Assemble an ATO package — bundle the boundary's SSP/SAP/SAR/POA&M and evidence into a single downloadable archive for submission.

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How to create an authorization boundary

1. Go to Authorization Boundaries (/authorization_boundaries).
2. Click Create New.
3. Enter a name and description for the system.
4. Save. You land on the boundary detail page, the home base for this system.

How to add an environment

Environments (dev, test, prod, …) are the system boundaries within an authorization boundary.

1. Open the authorization boundary detail page.
2. In the System boundaries section, click to add a new one (/authorization_boundaries/:id/boundaries/new).
3. Fill in name, description, and the environment classification.
4. Save. The environment now appears on the boundary, and can be referenced when filtering assessment results by environment.

How to add team members

1. On the boundary detail page, find the Team members section.
2. Click to add a member (/authorization_boundaries/:id/authorization_boundary_memberships/new).
3. Choose the user and assign a role from the dropdown (the role governs what they can do within this boundary — see RBAC).
4. Save. Use the same section to edit a member's role or remove them.

How to record a leveraged authorization

Use this when your system inherits controls from an underlying authorized system (a leveraged authorization is recorded on your — the leveraging — boundary).

1. On the boundary detail page, start a new leveraged authorization (/authorization_boundaries/:id/leveraged_authorizations/new).
2. Enter the leveraged system name/ID and the responsible party.
3. Save, then open the leveraged authorization's detail view.
4. Click Populate to pull inherited controls/components from the underlying system into your boundary.

The leveraging side can also view inherited POA&Ms read-only — see POA&M.

How to assemble and download an ATO package

1. On the boundary detail page, open the ATO Package Wizard (/authorization_boundaries/:id/ato_wizard).
2. The wizard assembles the boundary's SSP, SAP, SAR, POA&M, and evidence artifacts into one Authorization-to-Operate package.
3. Create the package, then use Download to get the bundled archive (download_ato_package).

Make sure the constituent documents are complete before you build the package — the wizard bundles their current state.

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Tips & best practices

• Treat the boundary detail page as your command center for a system: its documents, environments, and team are all one click away here and in the sidebar.
• Define environments early — SARs can filter results by environment, which is far more useful when your environments are already modeled.
• Record leveraged authorizations before writing SSP control narratives, so inherited controls are already populated and you don't re-document them.
• Keep boundary membership tight — access to every document under a boundary flows from membership plus role.

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Troubleshooting

Symptom	Likely cause	What to do
ATO package is missing a document	That document doesn't exist or isn't complete for the boundary	Create/complete the SSP/SAP/SAR/POA&M first, then rebuild
"Populate" pulls nothing	The leveraged system reference is incomplete	Re-check the leveraged system name/ID on the leveraged authorization
Can't create a boundary	Your role lacks the permission	Ask an Instance Admin (Administration)
A member can't see documents	Role assigned at the wrong scope	Confirm the boundary-scoped role in the Team members section

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Related guides

• User Guides index
• Getting Oriented
• System Security Plans (SSP)
• POA&M
• Administration — instance-side boundary and member management.
• Screens & UI — exhaustive element-level reference.