'A20: Aggregate item limit exceeded.'"

I am trying to subscribe to around 1100 ric names , but i receives this error

StatusMsg
    streamId="5"
    domain="MarketPrice Domain"
    state="Closed / Ok / None / 'Batch request acknowledged.'"
StatusMsgEnd

StatusMsg
    streamId="19"
    domain="MarketPrice Domain"
    state="Closed / Suspect / Too many items / 'A20: Aggregate item limit exceeded.'"
    name="ARPBS=ECI"
    nameType="1"
    serviceId="467"
    serviceName="hEDD"