Outlook Tasks Identifiers

[Wayneb]

I have a question regarding Tasks and in particular what MAPI properties are
used to match the assigners task entry and assignee's task entry.

In other words when a task update is sent what ID's are used to match the
update to the original task entry.

I originally throught that PR_STORE_ENTRYID was used as this value seems to
be identical between assigner and assignee, however after a bit of tinkering
I found that it wasn't this value alone, if indeed it is this value at all.

Any help would be greatfully received.

 

[Ken Slovak - [MVP - Outlook]]

It looks to me like on the delegator's copy of the task there's a PT_BINARY
that has a GUID at GetIDsFromNames("{00062008-0000-0000-C000-000000000046}",
0x8519) Or PT_BINARY and on the person who accepted the task's copy you have
that same property as TaskGlobalObjId.

You also have on that person's copy another property TaskMyDelegators at
GetIDsFromNames("{00062003-0000-0000-C000-000000000046}", 0x8117) Or
PT_BINARY which looks like it encodes the identity of the delegator along
with some other information, in my case it encoded the Exchange
distinguished name for the delegator.