Normal: Product - Promotion
If you want to include a product into catalogue, first ensure that you know the product, the supplier, the terms.
Preverse: Promotion - Product.
A company decides to act like others and includes first positions into catalogue without thinking out the supplier and terms. Result - a holy crap for communication dept to find pics, and then for buying dept to find this f#$king supplier... In the end clients want the damned product and the company still doesn't have it.
The preverse scheme occures when the CEO wants something to be included and other depts (sales, buyers) don't want to loose their time for preparation. When a smart decision comes - to make a last step to push others to act.
As to me I hate this reverse logic. Especially when I'm the last step executor.