Hi Bruno,

Another way to get the same results is using the class library. For example, you could proceed as follows:

• Get all the protocols using GetProtocols. This method return a collection of IDmsProtocol objects
• Get all elements using GetElements. This method returns a collection of IDmsElement objects. Interestingly, one of the properties of the IDmsElement object is the protocol (returned as IDmsProtocol object)

I believe with these two data sources you can determine which protocols are not used.

Hope it helps.