The announcement of the SIDR virtual interim failed to reach iesg-secretary@ietf.org within the required two weeks notice. Additionally the agenda was published on Sunday 17th March and thus failed to meet the requirement that "The agenda must be published at least one week before the call or session" . The requirement to provide appropriate notice of the meeting and its agenda is fundamental to the IETF open standards process. Since the failure to meet these requirement may disadvantage some contributors, I regret that I find it necessary to cancel the proposed SIDR interim meeting scheduled for 24/March. I thank those that provided feedback on the matter and apologize for any inconvenience caused. Stewart