At minimum, a custom attribute must be created on which objects for the values to automap in Order Management from B2C Commerce Cloud at the Order…

At minimum, a custom attribute must be created on the Order Item and Order Item Summary objects

for the values to automap in Order Management from B2C Commerce Cloud at the order item level.

A custom attribute is a field that stores additional information about an object that is not captured by

the standard fields. A custom attribute can be created on any object in Order Management, but it

must have the same API name and data type as the corresponding attribute in B2C Commerce Cloud.

For example, if an order item has a custom attribute called Color in B2C Commerce Cloud, then an

Order Item and an Order Item Summary must also have a custom attribute called Color in Order

Management for the value to automap. Reference: Order Management Objects, [Custom Attributes]