According to Gazprom (as quoted by RFERL) the Dutch government has suspended the license of South Stream Transport B.V., which apparently is a Gazprom subsidiary registered in the Netherlands. South Stream Transport B.V. operates at least the maintenance of TurkStream, which they now say they can't do anymore due lack of a Dutch license.
But TurkStream runs between Russia and Turkey, albeit to the European side of Turkey, so from there gas goes to Serbia, Hungary etc. (according to RFERL). So why would Gazprom hand over a degree of control over this Russia-Turkey pipeline to the Dutch, by registering their subsidiary in the Netherlands? Is this related in some way to some EU regulations or requirements, since some gas customers of the pipe are in the EU, or was it purely Gazprom's decision for other reasons?