Start worflow due to infotype fields changes

[Shai Eyal]

Hi all,

I'd like to start workflow whenever a certain infotype field value
change from x to y. For example, whenever employee group changes from 2
to 9 I'd like my workflow to start.
I know I can trigger event whenever infotype created/changed, however
when I receive the object (BUS1065) with employee group 9 I can't know
if it was actually change from 2 to 9 or other field changed and
employee group value was 9 before.
I looked for change documents but it appears that HR doesn't work with
change documents. That's quite surprising because I don't find how HR
records display log of changes.

Any ideas before looking for userexit/BADI ?


Thanks in advance,
Shai Eyal