When setting up employee expense reimbursements through payroll, how does NetSuite know which A/P account to debit? It says to create a payroll item and map that to an EXPENSE account, but nowhere does it ask which liability account to debit. Can someone help????

On subsidiary preferences, you will find the default account.

you have to set up a payroll item, we have it as "expense reimbursment" and added it to the employee payroll under earnings..