It would be extremely useful if most Alteryx tools had the option to output error records seaparetly. This functionality is already present in most other ETL packages, even freeware ones like Pentaho - Kettle. From its wiki: http://wiki.pentaho.com/display/EAI/.09+Transformation+Steps
http://wiki.pentaho.com/display/EAI/.09+Transformation+Steps
Step error handling allows you to configure a step so that instead of halting a transformation when an error occurs, the rows that caused an error are passed to a different step.