Lookup tables are tables of values used in message transformations that require the replacement of incoming values by corresponding outgoing values (For example, when your B2B partner is using item different codes than your own items codes).

The message transformation step can look up an incoming message value in this table and replace it with the matching value in the outgoing message.

There are tools to create -either manually or automatically through import functions-, append, manage and share these lookup tables allowing you to centrally manage these tables and reuse them across channels and accounts and even sharing them with other users.

All lookup tables commands are detailed in Lookup Tables chapter in Reference Manual.