A Supplier is an entity (company or organization or physical person) that you receive/purchase products from. 
A Client is an entity (company or organization or physical person) that you ship/sell products to. 

The supplier must be chosen prior to creating a Purchase Order or a Goods Inbound document. 

Similarly, a client must be chosen prior to creating a Sales Quote, a Sales Order or a Goods Outbound document.


The Contacts that are defined under a supplier or a client can be viewed and updated by clicking the contacts icon next to the respective supplier or client name.