We had to buy a Bull (https://atos.net/fr/solutions/data-analytics-business-comput...) and participate in their "Bullion Partner" program to get the right to be involved in h2020 projects.

Our company CEO was very clear that this was just a cash grab from them, asked by France "ministère du numérique" (also, we ended up managing the Bullion software ourselves because their engineers couldn't follow RedHat documentation for more than 10 minutes, while still having to pay the support contract).