In SAP UI5, Grouping the list items can be done on list by adding a declarative sorter with group equals true to our binding syntax.

The items aggregation of the List control is bound to a model path invoice>/Invoices. The sorter property of the items aggregation is set to sort the items based on the ShipperName property and group them based on the same property.

In other words, the items in the list will be sorted based on the ShipperName property and grouped based on the same property. The grouping feature is only available for dimension columns and takes place on the server.