One or more objects are failing to collect metrics. When viewing the object in Inventory Management, the status is displayed as In Maintenance (Manual).
Example:
VMware Aria Operations 8.x
This occurs when objects are manually placed into maintenance mode within the Aria Operations interface.
Note: This state is local to Aria Operations and does not reflect or impact the maintenance mode status of the host or VM within vSphere.
Aria Operations.Operations > Configurations > Inventory Management > Collection States > In Maintenance(Manual)*End Maintenance button.Example: