When a Retail Item is added to the same receipt, the Discount is applied to the Receipt and will be evenly split among the Retail Items.
As more Retail Items are added: the Discount value will be uniformly split among the Retail Items. Similarly, when Items are deleted from the Receipt the Discount value will be split among the remaining Items.
Note: The Net Discount applied value to the Receipt will not change.
As we increase the Retail Item value from the Receipt – the Tax, Gratuity, etc. for the Retail Item will increase but the net Discount value applied to the Receipt will be constant.
Safety Limit
Safety Limit Percentage – When the entered Discount value has passed the Safety Limit % set in BO, the ‘Discount Exceeds the Safety Limit’ pop-up appears in POS.
The Safety Limit Percentage is calculated based on the Discount entered for the Open Discount with the Total of the Receipt.
Once the Safety Limit condition is satisfied with the Discount value entered, the Discount will be applied to the Receipt.
Note: Even though the Safety Limit condition is satisfied with the Discount value entered, the Discount entered should be with the within the Discount Range set in BO.
When a Before Tax Open Receipt Discount is selected, the Safety Limit will be calculated only based on the value of the Retail Item (exclude Tax value for calculating Discount).
Roles
Only the Roles configured in BO will have the permission to apply an Open Receipt Discount in POS.
If a Role which doesn't have access to apply a discount: the Open Receipt discount field won’t appear for them (the Open Receipt Discount option won't be available in POS).
If a user has multiple Roles, only the Roles the user is currently logged-in as will be considered.
Example: a user has 2 Roles (Manager [has discount access] and Cook [no discount access]. When logged in via Manager, the Discount field will be available while not the case for Cook.
If the Combine With Other Discount is Enabled, more Discounts can be added (Item Based,Receipt Based, etc.).
If Disabled, an Open Receipt Discount cannot be combined with other Discounts.

If Amount is disabled for the Discount, the Amount field will be greyed out.
If Amount is disabled for the Open Receipt Discount, the Percentage field will be enabled by default for the OpenReceipt Discount.

Customer Attach
Under the condition, when the Customer Attach toggle is enabled for the Open Receipt Discount in BO:
A Customer must be attached to the Receipt in POS for the Discount to be applied.
The Customer must also be attached to the Membership Plan selected for the Discount configured in BO.
Open Discount Removal
An Open Receipt Discount cannot be deleted from a Receipt. When attempting to, a pop-up appears notifying you that you can't delete the Discount.
An Open Receipt Discount can be removed by clicking it.
The Open Discount window appears.
Select Remove, and the Discount applied to the Receipt is removed