Can I tell if an ApiObject has been Changed?

hi. We're on Peopletools 8.54 and upgrading to 8.55 in a couple weeks, in FSCM 9.2.

My issue is that I need help on a new app engine with a CI using ApiObjects in peoplecode - to update the data in a component per an input file.  It loops through the input file and processes row by row with the Save() for each.

In testing, the users want to know if the input row has been ignored or processed.

I have error handling and edit checks on the input rows (marking some rows as 'Ignored' and Cancelling those).

However, in some cases the user is entering input rows that don't make sense. At all.