Within 3 days after all necessary sellers’ signatures have been obtained on the listing or at the beginning date of the listing as specified in the contract, whichever is later, on any exclusive right to sell or seller reserved listing on 1-4-unit residential property and vacant lots located within the service area of the MLS, Broker Participants shall (1) input the listing to the service, or (2) submit a seller-signed exclusion in accordance with Section 7.6 (Exempted Listings) to the service. All necessary signatures are those needed to create an enforceable listing, which generally means all named signatories to the listing agreement. In the event there are known additional property owners not made signatory to the listing, listing broker shall disclose said fact on the service and state whether the event listing agent is prevented from complying with the 2-day time period due to seller’s delay in returning signed listing agreement, listing broker must submit the listing to the service within 2 days of receipt back from seller. The MLS may require listing broker to present documentation to the service evidencing seller’s delayed transmission. Only those listings that are within the service are of the MLS must be input. Open listings or listings of property located outside the MLS’s service area (see Section 7.7) are not required by the service, but may be input at the Broker Participant’s option.