This entry is used in combination with AllowReactivation.
If you use a network license, then all installation codes, which are local codes (e.g. NetBios-Name) and cannot be retrieved through the network, have to be filtered out for the reactivation.This installation code is ignored on comparing the hardware Ids in combination with MinIdenticalInstcodes. Set IgnoreLocalInstCodes=true
Default value: True
If you use a code which works only for single user installations, especially code 4, 11, 13, then you have to set IgnoreLocalInstCodes=false. You can always set it to false if your product is used only as a single user version and never as a network version.
See also
Allow Reactivation - turn on the reactivation feature
CheckInstcodeType - additional configuration setting
MinIdenticalInstcodes - additional configuration setting