I have created a number of payroll categories for our site allowances and have exempted all the site allowances so that they don't accrue annual leave or RDO accruals because they are already accrued within the Base Hourly amount. Unfortunately one of the payroll categories will not exempt the Leave accruals, which means each week we are preparing the pays we have to manually adjust for anyone who is working at that particular site. When I go to the entitlements tab and go to both the Holiday Leave Accrual and RDO accrual tabs, I click onto the Exempt and try to tick the Site Allowance that is accruing, I receive an error message (Attached). All the site allowances are set up exactly the same and at the same time so I don't know why I'm getting a message for this particular allowance. All linked categories are set up as hourly wages.
Can you please help me fix this problem.