Top menu >> Commissions >> Imports setup >> Add an item variable >> Copy to a custom field

You can create a custom field and copy information to that field with your commission import when you add an item variable

Copy to a custom field

When you set the radio button to Enabled the Category will show where you are required to choose: customer, location or account. 

Next step is to choose the Field you want to copy the data to. 

Overwrite: Leave existing data intact: when checked, after the first import into the custom field it will not overwrite the data on any commission imports after. When the box is unchecked it will update the field if new values are imported for that variable (eg: billing month). 

When done: OK

See also: