In a driver for a table, if the primaryKey is unique, does the displaykey can have duplicate values ?
Bernard Pichot [SLC] [DevOps Advocate] Selected answer as best 11 hours ago
Hi Bernard,
Both the primary key and the display key must be unique.
In the case of the display key, you might run into duplicates, but that can cause problems when linking alarms or even DVEs.
And for that reason, all connectors should make sure that display keys are always unique.
More information here: Display keys | DataMiner Docs
Bernard Pichot [SLC] [DevOps Advocate] Selected answer as best 11 hours ago

Also to note on that: an automationscript is relying on the display key. Even when there is the indication that the primary key is being used, this primary key is first translated into the display key before doing the actual set, so this could result in the value being set on the wrong row.