Cancel Calendar invitation - Not supported calendar message.ics

[Chris P_]

Since we upgraded to Madrid our cancellation iCalendar mails sent don't work anymore.
They show in the mailbox as follows:

So further investigation found that this was sent via email:
 

This is exactly the same as before Madrid and it worked like a charm as it showed an email message with the option to remove the meeting from your calendar.

Now obviously I did some testing before running to the community and I found that if I changed this in the email:

REQUEST to CANCEL it actually does send a working meeting cancellation!

So how do I manipulate the 'method' used in the email for Calendar invitation (cancellations) before sending them?

Cheers Chris

[Raymond15]

Hi Chris, 

Have you figured out a solution for this? We recently went from London patch 5 to 8 and I suspect it caused the issue. Out cancel invitations on incident and change_request also send out "not supported calendar message.ics." I have to change the METHOD from REQUEST to CANCEL resend in order for the email to display properly.

Thanks,

Raymond

[Chris P_ · Accepted solution]

Well luckily I did! By adding the following Business Rule to the sys_email table: 

Conditions:
[Content type] STARTS WITH 'text/calendar; method='
[Body text] STARTS WITH 'BEGIN:VCALENDAR'
[Body text] CONTAINS 'METHOD:CANCEL'

Actions:
[Content type] TO 'text/calendar; method=CANCEL'

Hope this works for you as well!

Cheers Chris

[Ray Nowell]

FYI:  This is a known issue with Madrid and is currently being worked on.  See KB0755841.

[Chris P_]

They used my solution as a workaround... I'm honored 🙂