StorageScope 5.2 SP5 dropping LUN masking information

I have seen similar outputs, but tis time with ... what's it called ? ... available storage and accessible storage. These two values aren't always the same. And this is too bad, since StS reports the lower value of the two and customers get the wrong bills and we're getting not as much paid as we should be.....

The report I'm looking at is 'Array - LUN Masking', filtered on a particular Symmetirx. One day shows 2264 luns and the next 6! We got a ticket opened, see what happens.

That's very extreme.... A service request is perhaps better indeed. Please let us know what the outcome is.
In my case the inconsistency between what the host actually "sees / uses" and what StS reports is consistent (does this line of text make any sence ?).

If you are referring to the canned column "Available" in the Drill-Down View of STS, Available is the amount of Capacity that can be reclaimed in an array either because the devices are Masked but not mapped or because the host is accessing the storage device and not using it.. Accessible is the amount of storage device capacity that is accessed by the host either by direct attach or through a switch. These two columns have different purposes.

Also the "Available" column is only found in ECC6.0. It is not in any of the STS sp5 reports.

Accessible or Available is only accurate if the host agent is reporting correctly.
Masking info is from the allocation table retrieved during discovery.
The masking table can be parsed incorrectly or have invalid data if the storage agent discovery doesn't complete under the set dcp . Check dcp's and agent logs for abnormalities.