ITN-EID 2018: Could you please explain the 50%-rule for inter-sector mobility and the 30%-rule for secondments?

For ITN EID, researchers must spend at least 50% of their time in the non-academic sector. Any inter-sectoral mobility between academic and non-academic beneficiaries must be international (i.e. between beneficiaries established in different countries). The total secondment duration to partner organisations (irrespective of the sector) is limited to a maximum of 30% of the fellowship duration.