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why do i receive multiple Events for same operation with pull subscription RRS feed

  • Question

  • I have a pull subscription to two resources in exchange

    For almost any operation there are always multiple events (they appear to be duplicates)

    for example:

    i have 2 resource mailboxes in a calendar appointment, my pull subscription gathers the creation events and im up to date

    then i move the appointment to the next hour

    I receive 4 (should be 2 imo) ItemEvents!

     

    gathered appointment og test 8 for NH-SX80@nh.vnoc2.com 
    itemId AAMkADhkM2RjZDlkLWY1NWEtNGQ5YS1hOGMwLTFlNzhkYjA0MzljNwBGAAAAAABzcFw7M0ZjQ5vOUNrMTWNRBwB7Pwt5oBwUTLLxFipuBzo3AAAAAAENAAB7Pwt5oBwUTLLxFipuBzo3AAN7T/S1AAA= 
    icalid 040000008200E00074C5B7101A82E00800000000251D5DB367EED50100000000000000001000000062B8FD572D584D4BBA6AAD6DA71ACE2B
    itemEvent type of: Modified.

    gathered appointment og test 8 for NH-SX80@nh.vnoc2.com
    itemId AAMkADhkM2RjZDlkLWY1NWEtNGQ5YS1hOGMwLTFlNzhkYjA0MzljNwBGAAAAAABzcFw7M0ZjQ5vOUNrMTWNRBwB7Pwt5oBwUTLLxFipuBzo3AAAAAAENAAB7Pwt5oBwUTLLxFipuBzo3AAN7T/S1AAA= 
    icalid 040000008200E00074C5B7101A82E00800000000251D5DB367EED50100000000000000001000000062B8FD572D584D4BBA6AAD6DA71ACE2B
    itemEvent type of: Modified.

    gathered appointment og test 8 for NH-DX80@nh.vnoc2.com
    itemId AAMkADY3NDRjMzIwLWVkZDEtNGJlZS04N2RmLTE5MjlmZWYzOTY3ZABGAAAAAAAkKeFNMPOwRYhpC8onqAS7BwB+I8Xon2TYQ54o8FGxtwxFAAAAAAENAAB+I8Xon2TYQ54o8FGxtwxFAANN4melAAA= 
    icalid 040000008200E00074C5B7101A82E00800000000251D5DB367EED50100000000000000001000000062B8FD572D584D4BBA6AAD6DA71ACE2B
    itemEvent type of: Modified.

    gathered appointment og test 8 for NH-DX80@nh.vnoc2.com
    itemId AAMkADY3NDRjMzIwLWVkZDEtNGJlZS04N2RmLTE5MjlmZWYzOTY3ZABGAAAAAAAkKeFNMPOwRYhpC8onqAS7BwB+I8Xon2TYQ54o8FGxtwxFAAAAAAENAAB+I8Xon2TYQ54o8FGxtwxFAANN4melAAA= 
    icalid 040000008200E00074C5B7101A82E00800000000251D5DB367EED50100000000000000001000000062B8FD572D584D4BBA6AAD6DA71ACE2B
    itemEvent type of: Modified.

    we can see from the above that the itemid changed but not the appointment (icalid)

    So my question is why are there so many events for a single operation?  This was a single operation (move the appointment) i would expect 2 itemevents, 1 for each resources mailbox that was effected



    • Edited by owen gerig Friday, February 28, 2020 8:03 PM
    Friday, February 28, 2020 8:01 PM