You might see similar error messages in the vmware probe log as follows:
[Data Collector - ****, vmware] Failed to collect data for monitor '***.Provisioned Space'. Updated value will not be available.: Lookup failed for value of monitor '"***:<data store name or ID>"."ProvisionedSpace"'. GUI will not display current value or severity. Will try again next polling cycle.
The vmware probe uses the below formula to calculate the Provisioned Space:
capacity - freeSpace + uncommitted
If any of these values is invalid or not returned to the probe then you might see the Self-Monitoring alarms.
An example of invalid value is when 'uncommitted' returns 'unset' instead of a number.