Service Design Center uses a change management process to track and approve all changes to any product. All of these changes, including additions, edits, and deletions, must go through the promote-approve-deploy process before they become available.
Any changes you make (change a name, change a price, add or delete a product from a bundle, etc.) to any product does not affect any users that already have the product.
When you promote a change to a carousel exchange category, Service Design Center validates the products in the exchange category to make sure all the products are compatible for exchange. If there is an incompatibility, the promotion will not be allowed. The error message associated with the failed promotion will help in troubleshooting the issue. See Changes to Products in Exchange Categories for more information.