there is nothing in any criteria for EO anything
Generally an operator/commander consideration in the application.
The basic certification/AFM data is used to match RTOW against runway distances and departure terrain clearances to cover the takeoff failure case.
Indeed, the AFM consideration is driven by the OEI case.
Considering that EVERY heavy takeoff considers and calculates OEI requirements ... to suggest that there is no EO criteria is somewhat fatuous, I suggest ...