[Jail_Bird]

Let's say you want to buy 20 different T-Shirts.
Is it best to use the UPS api behavior or missing item?

The missing Item method (on receipt of goods), Is based against the weight of the Item. If It's significant to register a weight on consignment and an Investigation Is opened by cross-checking the carrier's manifest, then the SE Is destined to fail.

How many Items are you planning to SE, Inclusive of the weight?

I like to go safe. Rather than modifying the reality, I'll say overweight. Let's say 3-4kg of items. I obviously can use Missing Item but for how many? It would be great to refund all of it. For example, Empty Package wouldn't work this time. So I'm guessing FTID would work or DNA? Well from my experience in the country I live in the DNA method is very hard to do because they always open carrier investigation and eventually it gets very risky.