If you received the following messages the explanation to each is:

- Requires shipping instruction: means your merchandise is held in Miami awaiting your shipping instructions.
- Requires shipping instruction because it is HAZ merchandise: you must authorize the shipment and pre-pay the charge for documentation of HAZ or dangerous merchandise before the shipment is shipped.
- Retention requires commercial invoice: You must provide the invoice for the cargo before it is shipped from Miami (at that same time take advantage and ask for the description of the items for the customs process).