Your catalogue includes attributes refering to your products, but it doesn't include prices and/or stocks?
This information is important to give channels updated data and make sure to provide Internet users the best user experience.
Easily add these data to your source catalogue without technical requirements, thanks to Lengow!
Go to "Catalogues" tab > Select the catalogue you want to complete > open the "Additional sources" tab > click on "Start to add additional sources"
Make sure this new file includes a "product id" column, so that Lengow could match products from your master feed and data you are adding to them through this new file/feed.
Read our "Additionnal sources" guide for more details regarding this option.