That upper limit also conforms to the so-called ICES advice rule, which indicates that when the spawning stock biomass is below the minimum spawning stock biomass reference point (MSY Btrigger), F is to be reduced to a value that does not exceed an upper limit equal to the FMSY point value multiplied by the spawning stock biomass in the TAC year, divided by MSY Btrigger.
Cloíonn an uasteorainn sin freisin le riail chomhairle ó ICES mar a thugtar air, rud a léiríonn nuair is lú an bhithmhais stoic sceite ná an pointe tagartha íosta do bhithmhais stoic sceite (UTI Btruicear), go laghdófar F go luach nach mó ná uasteorainn is ionann agus luach phointe FUTI arna iolrú faoin mbithmhais stoic sceite i mbliain TAC, arna roinnt faoi UTI Btruicear.