TCC Import - Records to ignore/skip based on column value

Summary

Single CSV file containing records for creation and Updates

Content

Hi,

I have developed a create script that for the employee entity that creates the user account & employee in one execution. This CSV file used initially contained all staff. That was fine for the initial run as all records had to be created. Now we have an incremental file (with some staff that need to be created and some that need to be updated). Of course, if the csv file contains staff that have already been created and it will error - with user already exists or something. 

Is there a way to ignore existing records from being processed by the create script? If we add a column in the csv that has a value of create or update, can the create script detect the column value and either process the record or ignore?