Hi,
You need to work with your release indicator setting for purchase order and go for having below setting
ReleaseIndicator ..Released..Changeability …..Value change % ...........Description
N...................................................................................................................Not Released
R.....................................X......................6.......................20.00.......................Released
Considering all purchase order release strategy configuration and setting completed!
Now create a purchase order and then change value for purchase order to find how release re-triggers based on different value.
Regards,
Biju K