Create durable key in Data Warehouse

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In dimension Project, there is business logic that Project Number and Project Name can change over time. Unfortunately, I cannot get any durable key directly from the source system. Is there a way how to deal with this situation? How to generate Project ID column - in this example is acting as Durable key?

See desired dimension structure.

DimProject

Project ID - durable key not from source system, I need to generate it.

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