[SCH-EUSR-33] The number of each Subset/SendingOrReceivingEndUsers MUST be lower or equal to the sum of the Subset/SendingEndUsers plus Subset/ReceivingEndUsers
SCH-EUSR-33
/eusr:EndUserStatisticsReport
every $st in (eusr:Subset) satisfies xs:integer($st/eusr:SendingOrReceivingEndUsers) <= xs:integer($st/eusr:SendingEndUsers + $st/eusr:ReceivingEndUsers)