I am experiencing issues that by description match's this KB almost exactly http://support.microsoft.com/kb/2768774
However my IOS users are on 7.1.2 and we are on Exchange 2010 SP3 RU6. Just wondering if anybody else is seeing this?
I will see this in the active sync logs when it goes wonky and takes over the organizer role.
/Microsoft-Server-ActiveSync/default.easUser=someuser&DeviceId=ApplDLXK18AHF197&DeviceType=iPad&Cmd=MeetingResponse&Log=V141_LdapC1_RpcC19_RpcL78_Pk94416536_Error:ItemNotFound_As:AllowedG_Mbx:_Throttle0_Budget:(A)Conn%3a0%2cHangingConn%3a0%2cAD%3a%24null%2f%24null%2f0%25%2cCAS%3a%24null%2f%24null%2f2%25%2cAB%3a%24null%2f%24null%2f0%25%2cRPC%3a%24null%2f%24null%2f1%25%2cFC%3a1000%2f0%2cPolicy%3aDefaultThrottlingPolicy%5F9929bf1d-9f96-4c0c-a064-f233bf6454f1%2cNorm_
POST/Microsoft-Server-ActiveSync/default.easUser=someuser&DeviceId=ApplDLXK18AHF197&DeviceType=iPad&Cmd=SendMail&Log=V141_LdapC3_LdapL16_RpcC32_RpcL78_Ers1_Pk94416536_Error:UID%3a7E99C04E3E704DF0A94A22C944C294960%2bOrganizerCheck%3aTrue_ClsName:IPM.Schedule.Meeting.Request_MOLk:False_As:AllowedG_Mbx:_Dc:_Throttle0_Budget:(A)Conn%3a0%2cHangingConn%3a0%2cAD%3a%24null%2f%24null%2f0%25%2cCAS%3a%24null%2f%24null%2f4%25%2cAB%3a%24null%2f%24null%2f0%25%2cRPC%3a%24null%2f%24null%2f2%25%2cFC%3a1000%2f0%2cPolicy%3aDefaultThrottlingPolicy%5F9929bf1d-9f96-4c0c-a064-f233bf6454f1%2cNorm