orderEditAddCustomItem
Adds a custom line item to an existing order. For example, you could add a gift wrapping service as a [custom line item](https://shopify.dev/apps/fulfillment/order-management-apps/order-editing#add-a-custom-line-item). To learn how to edit existing orders, refer to [Edit an existing order with Admin API](https://shopify.dev/apps/fulfillment/order-management-apps/order-editing).
orderEditAddLineItemDiscount
Adds a discount to a line item on the current order edit. For 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).
orderEditAddShippingLine
Adds a shipping line to an existing order. For 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).
orderEditBegin
Starts editing an order. Mutations are operating on `OrderEdit`.
All order edits start with `orderEditBegin`, have any number of `orderEdit`* mutations made, and end with `orderEditCommit`.
orderEditRemoveDiscount
Removes a discount on the current order edit. For 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).
orderEditRemoveShippingLine
Removes a shipping line from an existing order. For 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).
orderEditSetQuantity
Sets the quantity of a line item on an order that is being edited. For 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).
orderEditUpdateDiscount
Updates a manual line level discount on the current order edit. For 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).
orderEditUpdateShippingLine
Updates a shipping line on the current order edit. For 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).