Reference EnumStrings or EngineeringUnits multiple times|OPC UA Standard|Forum|OPC Foundation

Hello,

is it permitted to "reuse" property variables like EnumStrings or EngineeringUnits?

Example:

|-> Node A

        |-> EngineeringUnit A

|-> Node B

        |-> EngineeringUnit A

|-> Node C

        |-> EngineeringUnit A

In the example EngineeringUnit A only exist once and will be referenced multiple times.

This example assumes, that the EngineeingUnits are fixed and can not changed durign runtime.

Similar could be done with an EnumStrings property for instance:

|-> Port A / Baudrate (in instance information model)

         |-> EnumString (referenced from the type information model)

...

|-> Port n / Baudrate (in instance information model)

         |-> EnumString (referenced from the type information model)

In the end only one instance from EnumStrings exist, or must a second instance be created in the instance information model?

BR

Martin