This is to compute all Gift Card sales on an accrual basis. It includes payments by all types excluding tax and reckons the date of service instead of payment date.

Validate in Zenoti

Zenoti -> Reports NEW (V2 report) -> Financial Reports -> Sales - Accrual report -> Select sale type as Sale, Refund , Select Gift Card in Item Type and All payment types , excluding taxes.
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Note: Non-monetary custom payments are not included.