Hi Ricky,
From our PMS Implementation team:
Most customers want it mapped to the "Frequent Stay Rewards" line item as a negative. Furthermore, typically rewards reimbursement/frequent stays lives under non-revenue but if further help is needed, we recommend speaking with PEP support on how those funds affect your bottom line.
I hope this helps some, please feel free to submit a case for more information if needed or hopefully another customer may be able to add some input on what they have done for this.
Thank you,
M3 Support