For businesses on the Launch or Grow plan, the best way to credit a customer is to create a coupon for the receiving customer with specific coupon settings that can only be used once and covers the entire amount you'd like to credit your customer.
Go to Financials
Select Coupons
Click the +New Coupon button
In Discount Type, select percent or dollar amount and enter the amount you would like to credit
Enter a Unique Code
For Total Redemptions, enter "1"
For Max per Customer, enter "1"
The remaining fields are optional. If you would like to customize the coupon even more complete any of the following fields:
Last Date to Use
Eligible Activities
Eligible Locations
Eligible Item Types
Click Create Coupon
Copy the coupon code and share it with the customer
For businesses on the Scale plan, we released a beta feature that allows for businesses to apply an amount of "credit" to a customer using Add to Balance.