The prepacking the article is available in inside the orderable unit (next lower level packing), and which contains the number of unit described in PackSizeNumeric. Unit desciption to PackQuantity. The value shoud be a valid UOM code like CS for case.

Usage
Mandatory
Rules
Identifier/Error message Flag
OP-T19-R002
Unit code MUST be coded according to the UN/ECE Recommendation 20
fatal