Merchant Fulfilled Lead time is the amount of time between accepting an order and providing shipping information to prove that the order has shipped.
Set a custom Lead time for the Amazon integration
- Go to Integrations > Manage Integrations
- Select Amazon
- In the General section, select Update default lead time to and enter the number of lead time days:

- Save changes
If you have individual items that take a little longer to ship, set the Merchant Fulfilled Lead time in the market listing.
Set a custom Lead time for an individual Amazon listing
- Go to Listings > Manage Listings
- Search for the listing > click the edit icon in the Amazon column
- In the Attributes section, click + Show more information
- In the MF Lead time to ship field, enter the appropriate number of days:

5. Save changes
This will only affect that specific listing and will override the Handling/Lead time days set in your Amazon integration settings.