The Sales - Service report provides you details of all the services performed at your center including the sale amount realized, the guest who took the service, the therapist who performed the service, and payment details.   

Important: Sale value is zero for the services if the guest uses one of these methods to redeem services: membership, package, gift card, prepaid card, or loyalty points. Note that these are alternate payment methods.

However, if your business has enabled the Include Redemption in Sales org level setting (Admin > Organizations > Settings > General), you will see the redemption value as the sale value.

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