Why is there no Listing SKU field for Program Listings?

[dacarter]

I'm very new to Canvas Catalog, and we're about to release our first paid program.  The program comprises 2 courses. Each of the courses has a Listing SKU, but the Program Listing does not have a Listing SKU field available. Is this for a reason, and if so, can someone explain why it is not a good idea to have a Listing SKU for a Program Listing?

Since we've not yet seen a Program purchase, I can't tell whether the SKUs for the 2 courses of the Program will be shown in the payment gateway audit trail or not. The SKU ordinarily shows up in the payment gateway audit trail as "Item Description" when an individual course is purchased. 

Thank you for your time reading this.

[dacarter]

I'm going to take a stab at answering my own question here. Does a program listing lack SKU because a program is essentially a bundling of other SKUs? I'm hoping that SKUs for the individual courses in the Program get bundled together and show up in the Item Description as expected when a program is purchased.