Contains information about message. Code for the organization that sends the item master message, provided by Posti (principal identifier). Language code of the item master in two-letter ISO 639-1 format, e.g. FI. Identifier of the principal in external system (OVT code, EDI sender ID). Name of the document. This should be InItemMaster. Date and time of item master creation. Identifier of the message which is unique at least in the scope of message sender. Contains information about item. Unit of measure for item quantity. Unique identifier for an item that belongs to a principal's catalog organization. Unique identifier for an item that belongs to a principal's catalog organization. Product class. This field is used as an inventory identifier. Lot number. Lot manufacturing date. Lot attribute 1. Lot attribute 2. Lot attribute 3. Revision number. Best before date. Incubation date. Material availability date. String with maximum length of 2 characters. String with maximum length of 40 characters.