Many companies do not waste their times to write down a detailed sales contract, but instead they send a single page proforma invoice to their buyers.
In some occasions, a proforma invoice may cover an order which will be shipped not in once but under several shipments.
This action is defined as partial shipment.
It is worth mentioning that, letter of credit rules also allow partial shipments as well.
But in some special situations, importers may prohibit partial shipments. In such a case, partial shipment should not be allowed under the sales contract or the letter of credit conditions.