Error: Could not find associated source field: <SOURCEFIELD name> for <Normalizer transformation>.
In the XML file, the specified REF_SOURCEFIELD attribute in the TRANSFORMFIELD element in the specified Normalizer transformation does not match the name of a SOURCEFIELD element.
Edit the XML field and verify the REF_SOURCEFIELD attribute matches the name of a SOURCEFIELD element in the XML file. Or, export the object again and then import it.