While running custom process which imports data into a staging object we see the issue "odf.cantReduceDecimalPlaces" and the script fails.
We've recently converted a number attribute with 0 decimals to 2 decimals and the issue started happening after that.
Release : 16.1.0
This is caused by custom process code where it was trying to modify the attribute back to it's original state with 0 decimals.
Once a number attribute is created with decimals, the decimal places can't be reduced. Issue was resolved by modifying the custom process.