We had a strange issue last week in our development system where a particular mapping was working in my system whereas the same was not working in my collegue's system. We had the same payload and was investigating the same issue. We then restarted the PI system and it was working fine for both of us.
Although it does seem strange, similar issue happened with the production as well.
Can anyone shed any light on this as whether this is to do with any notes or cache issues or mapping engine problem.