This primary rule is tempered by a so-called « reality test » as the Convention also requires the relevant intermediary to have , at the time of the agreement , an office in that State which is engaged in a business or other regular activity of maintaining securities accounts ( hereinafter the « relevant office requirement ') .
Esmasele reeglile on lisatud nö « kohaloleku test » , kuna konventsiooni kohaselt peab vahendajal lepingu ajal olema selles riigis üksus , mille igapäevane tegevus on väärtpaberikontode haldamine ( edaspidi « asjakohase üksuse nõue ") .