[mothered]

Let's say 3-4kg of items. I obviously can use Missing Item but for how many?

As said, It depends on the weight of each Item.

For example, If one Item weighs 600 grams, It will "definitely" register a weight at the carrier's depot- namely their weighing facilities. As such, It could not have been missing when the company's warehouse personnel picked, packed and dispatched the consignment. All In all, both the company and carrier have released themselves from liability.

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?

Evidently the empty package will fail. Not only will the weight of all Items be registered, but It's also extremely unlikely (If not Impossible) for the stores to make a picking error with so many Items "on the same order".

Forget about the flawed "so-called" FTID. Simply DNA It.

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.

An Investigation Is part of company protocol to move forward with the claim, and put pen to paper In approving It thereafter.

In fact, the majority have a successful outcome.