Hi ravim,
indeed this looks strange but this is from the ELCD database directly. The amounts itself are rather small (1e-6) though. From what we understand, the flows are not meant to be connected to other processes and for building supply chains. For earlier (pre 1.7) versions of openLCA, we added the dummy processes to link to these to these flows; in 1.7 there is the possibility to decide if you want to link to providers or not.
Hth,
Andreas