a. Shipment/Order

A Shipment can contain one or many Orders.
An Order refers to one or many Shipments. 

b. Shipment/Transport Package

A Shipment contains one or many Transport Packages.
A Transport Package pertains to one and only one Shipment 

c. Shipment/Forwarder

A Shipment is handled by none or one Forwarder.
A Forwarder can handle one or many Shipments. 

d. Shipment/Transport Stage

A Shipment may use one or more transport stages.
A Transport stage pertains to one and only one Shipment. 

e. Shipment/Shipping Documentation

A shipment has shipping documentation.
Shipping documentation pertains to one and only one shipment. 

f. Shipment/Customs Declaration

A shipment pertains to one declaration.
A declaration contains information on one or many shipments. 

g. Shipment/Carrier

A shipment is handled by one or many carriers.
A carrier can handle one or many shipments. 

h. Shipment/Customer

A shipment is delivered to one and only one customer.
A customer receives one or many shipments. 

i. Shipment/Supplier

A shipment is supplied by one and only one supplier.
A supplier supplies one or many shipments. 

j. Transport Package/Transport Package

A Transport Package contains none, one or many transport packages at the next level.
A Transport Package pertains to one and only one Transport Package at the level above. 

k. Transport Package/Packaged Product

A Transport Package contains one or many Product Packages.
A Packaged Product pertains to one and only one transport package.

 l. Traded Product/Order

A Traded Product can relate to one or many Orders.
An Order can relate to one or many Traded Products.

 m. Traded Product/Packaged Product

A Traded Product can relate to one and only one Packaged Product.
A Packaged Product contains one or many Traded Products.

 n. Shipment/Customs Authority

A Shipment may be handled by one Customs Authorities.
A Customs authority handles one or many shipments.