The length of the approval process can vary depending on the retailer channel as well as the specific category in that retail channel.
Each retailer channel has their own workflows and QA process that each product needs to go through and the time products take to go through these workflows can vary anywhere from a few hours, to a few days to a week or more.
The product syndication service we provide often reduces the time a product takes to go through a retailer's workflows by the simple fact that your product data is typically more complete and meets the retailers requirements more closely.