Bol.com allows EAN matching, i.e. if your products have already been created by the marketplace by another reseller, you don't need to send the "products" values usually required to create the product ad on this channel.
For these products:
- Category mapping is not required.
- Make sure you have completed the following offers attributes:
- Internal Reference
- EAN
- QuantityInStock
- Price
- Deliverycode