Forward slash in Product Code

Some of our products have forward slashes in the SKU and we are using the product SKU as the product “Code” in the Episerver catalog.  We're having a problem with this because we cannot access products using the Service API when there is a forward-slash in the product “Code”

Examples:

If we create a product with Code 123, we can then retrieve the product via the Service API on the following endpoint:

GET: {{baseUrl}}/episerverapi/commerce/entries/123

However, if we change the product Code from "123" to "123/456", the following call will not work (404 error) due to the forward-slash in the URL (obviously breaking the routing):

GET: {{baseUrl}}/episerverapi/commerce/entries/123/456

I would have thought that encoding the forward slash in the product Code to “%2F” would resolve the issue.

i.e.

GET: {{baseUrl}}/episerverapi/commerce/entries/123%2F456

But also does not (again 404, not found error).

Does anyone have a suggestion on how to retrieve a product that contains a forward slash using the Service API?

Thanks!