Ans:
The disadvantages are mentioned below:
When an e-commerce retailer outsources fulfillment to a service provider. The control of their fulfillment operation passes onto the 3 PL.
Some businesses provide some kind of customization to the fulfillment process. While outsourcing, you may have to do away with such customization. Sometimes it proves beneficial as the costs are reduced so the money can be utilized on other fronts.
Many sellers manage to lower their costs by outsourcing. Sometimes owing to the volume and requirements of the seller, the costs ride. Some retailers take it as a disadvantage, but it can be to their advantage since they are in a position to focus on their business, improving their services and scalability.