Equipment or inventory report by collection

[Anakin]

Hi all, I'm having a problem friends, I have a collection of 61 computers, all with the agent and antivirus installed sccm 2012, but also I have a custom inventory report for each collection; happens that when generating the report taking as parameter the collection of 61 teams only shows me 56, not shown all that happens and all the collections, in all there are a number and the inventory report shows another number, one less than the ones contained in the collection

[Jeremy]

Can you post the collection query and the report?

[Anakin]

The amount of equipment I have in my collection is 61 but to issue the report by collection equipment, the total tells me less is 56, not that happens, some teams do not take the report by collection

[GarthMJ]

IMO this issue is like because the CM07/CM12 client is not installed on these PCs. The PCs have been discovered by CM via AD discovery but the CM client has not be installed.