Deleting this objects in Operations -> Configurations -> Inventory Management page gives error : "Some of the selected Objects cannot be deleted here. To manage them go to the corresponding configuration page."
Environment
Aria Operations 8.16.x or later
Cause
This issue occurs when an inventory object (for example, a Tier) becomes associated with an orphaned or stale dependency relationship within the Aria Operations database.
In this condition, the affected object retains a backend reference to a parent entity, such as a Business Application or Custom Group, even though the corresponding relationship is no longer valid or has become inconsistent. As a result, Aria Operations continues to treat the object as part of a managed application hierarchy.
To prevent accidental removal of objects that belong to application structures, Aria Operations includes built-in user interface safeguards that restrict deletion of these objects from the Inventory Management page. When such an object is selected for deletion, the UI directs the user to remove it through the appropriate configuration workflow instead.
Because the stale relationship exists at the database level and cannot be corrected through the UI, the affected object must be removed directly through the Aria Operations Suite API to eliminate the orphaned inventory entry.
Resolution
In this case the decommissioned object was unique and did not have any duplicate entries.
To resolve this, we can force the deletion using the Aria Operations Suite API. Please follow the steps below to proceed with the deletion:
Obtain the Object UUID:
Navigate to Operations > Configurations > Inventory Management.
Click the "Show Columns" icon (blue columns) and check the box for ID.
Search for "object name" and copy the value in the ID column (this is the UUID).
Delete via Suite API:
Open a new browser tab and go to: https://[Your-Aria-Ops-FQDN]/suite-api/
Click Authorize in the top right and log in as the local admin.
Scroll to the Resources section and locate DELETE /api/resources/{id}.
Click Try it out, paste the UUID into the id field, and click Execute.
A "Response Code: 204" indicates the deletion was successful.