Home > @infiniteobjects/shopify-data-manager > AdminTypes > Mutation > orderEditAddLineItemDiscount
Adds a discount to a newly added line item on the current order edit. More information on how to use the GraphQL Admin API to edit an existing order, refer to [Edit existing orders](https://shopify.dev/apps/fulfillment/order-management-apps/order-editing).
Signature:
orderEditAddLineItemDiscount?: Maybe<OrderEditAddLineItemDiscountPayload>;