Hello,
the rule set to check for duplicate pc "MAC and Serial", is often not applied correctly.
![](http://ask.ocsinventory-ng.org/?qa=blob&qa_blobid=5985638487957571233)
Some PCs are inventoried as duplicates even with the same "MAC and Serial"
![](http://ask.ocsinventory-ng.org/?qa=blob&qa_blobid=14594415201034325176)
In activity.log i have this information:
Tue Oct 6 11:06:26 2020;53692;517;PCXY-2020-09-30-07-34-54;OCS-NG_WINDOWS_AGENT_v2.6.0.0;duplicate;replacing_error
OCS Server 2.7
OS Ubuntu 18.04 LTS