We are on constellation 25.1.3 , we have pre and post datatransform configured for flowaction. while debugging post dt i observed that pre dt is also being triggered. is that know issue in constellation?
This is not an issue but it is the functionality. Pre processing data transforms are only for capturing default values for the fields present on the screen. So, on submit of the screen, the pre processing runs first to set default values, then the values on screen gets applied on them and then post processing runs. This is the sequence that gets followed for DX APIs. As constellation uses DX APIs, you will see the pre processing data transform running on submit of assignment.
This helps, this is not the behaviour with traditional pega right?
Yeah, there, it runs only when we launch the assignment.