Developers - What is ENTRYSEQ?

SOLVED

I am developing an import file for Sage for an inhouse Onboarding program. I am importing in to the Employees table.

My limited understanding of ENTRYSEQ is that it has something to do with payroll being pulled and that number is changed when payroll is pulled.

If I am importing a batch of new hires should ENTRYSEQ be '0' for all or does it need to be a unique number for everyone?

The import function does not like it being left blank.