(a) The first pleading filed by any party in a case shall have endorsed thereon an address in the commonwealth at which all papers and notices thereafter may be served upon that party. The first pleading filed by an attorney on behalf of a party shall constitute the attorney's entry of appearance for that party, and shall have endorsed thereon the attorney's supreme court identification number and an address in the commonwealth at which all papers and notices thereafter may be served upon said attorney on behalf of that party. Subsequent filings by other counsel on behalf of that party shall not have the effect of an entry of appearance unless a praecipe for appearance is filed with the clerk of courts.(b) A change of address of an attorney of record may only be accomplished by filing a written request with the clerk of courts, directing that the clerk's attorney file be updated to reflect the attorney's change of address. The request must be on the attorney's letterhead, shall be signed by the attorney, and shall contain the attorney's full name, Supreme Court identification number and new address. When a law firm changes its address, each attorney employed by said firm shall comply with this procedure.Amended effective 1/1/2020; amended effective 7/1/2023.