If you’re shipping apparel, textiles, or other regulated goods, you may need to include a Manufacturer ID (MID) when booking your parcel.
If required, you can enter the MID for a product directly in ReadyToShip.
Expand the order using the blue arrow
Click on the "world" icon beside the product
Enter the MID in the field provided
Click Save
You can find more information on MID requirements on the Sendle website here.