Configure Resource Locations Policy Inheritance Exception

What Policy Overriding Is

In the Google Cloud Resource Hierarchy, organization policies are inherited down the tree by default from the organization root to folders and projects. When a child node (such as a specific project) requires an exception or modification to an inherited list constraint like constraints/gcp.resourceLocations, administrators can configure the policy on that specific resource node to override its parent by setting inheritFromParent: false (replacing parent rules rather than merging).

How It Meets The Requirements

• Preserves Base Access: By explicitly including both in:eu-locations and us-central1 in the project's allowedValues list, the team retains the ability to provision resources in European regions while gaining access to us-central1.
• Isolates the Exception: Replacing inheritance on the project node isolates the exception strictly to that project without weakening organization-wide data governance rules.
• Maintains Compliance: Descendant and sibling projects continue inheriting the strict organization-level constraint.

Key Advantages and Capabilities

• Granular Exception Handling: Allows precise, project-level deviations from broad corporate baselines without altering folder-level or organization-level rules.
• Deterministic Evaluation: Replacing inheritance avoids unexpected interactions that occur when merging conflicting allowedValues or deniedValues lists.
• Non-Retroactive Impact: Applying or overriding the policy only affects newly created resources, leaving existing infrastructure operational.
• Auditable Boundary: Security and compliance teams can easily inspect project-level policy overrides in Cloud Asset Inventory or Security Command Center.

Why This Is Optimal

Replacing inheritance and providing the complete set of permitted values (in:eu-locations and us-central1) ensures deterministic control. If the administrator simply merged values, the parent policy would still restrict creation if restrictive rules conflicted.