Rotation Constraint

Rotation Constraint is a common term in international trade practice, especially in Letter of Credit (L/C) settlement and shipping arrangements. It refers to the requirement that in partial shipments, each batch of goods must be shipped sequentially according to the agreed order, time, or vessel, without reversing or skipping batches. This constraint is commonly found in the 'partial shipment' clause of L/Cs or the shipping schedule of sales contracts, aiming to ensure orderly flow of goods and avoid difficulties in buyer's inventory management or market supply disruption due to batch confusion. Usage scenarios include bulk commodities, seasonal goods, or long-term supply contracts. Note: If the rotation constraint is violated, the bank may refuse payment under the L/C, or the buyer has the right to claim. The difference from 'partial shipment' is that partial shipment only allows multiple batches, while rotation constraint further specifies the batch order; unlike 'shipment deadline', it does not emphasize the date of a single batch but the relative order between batches. Foreign trade practitioners need to clarify rotation rules in the contract and strictly follow them when booking space and customs declaration.