Payslips

Hello

We pay some of our employees a travel allowance to cover travel expenses. The allowance is not reportable because it is equal or below the ATO reasonable rate.

My manager paid travel allowances to two employees at the end of July after I had already processed the July payslips. I normally enter the travel allowance amount on the payslip under the travel allowance pay roll category. 

Should I create an unscheduled payslip for each employee just with the travel allowance, or do I need to reverse and reprocess the last payslip to include the allowance?

Thank you:)