Hi,

I am working with Commerce 12.3.1, the DisplayName property of the line item is not being saved. 

The below code snippet is present in the custom implementation of UpdatePlacedPrice method of DefaultPlacedPriceProcessor class.

//If display name is not present use the parent name

string DisplayName = entry.GetPropertyValue("DisplayName");
DisplayName = string.IsNullOrEmpty(DisplayName) ? entry.Name : DisplayName;
if (!string.Equals(lineItem.DisplayName, DisplayName))
{
if(!noneValidationAdded)
onValidationError(lineItem, ValidationIssue.None);

lineItem.DisplayName = DisplayName;
}

But when it saves to cart, the display name is blank. Below is the scenario:

Create a line item with DisplayName = "Test Display Name", I then save the cart using the code snippet below:

var orderService = ServiceLocator.Current.GetInstance();
orderService.Save(cart);

But once I check the InMemoryLineItem object's DisplayName property it is blank.