A code table lookup rule allows a column to be "looked up" in a code table. For instance, a product number may be looked up in the product master table to check that it is a valid number.
You can modify the sequencing of the rule by changing the 2.2.1 Rule Sequence. A 2.2.2 Rule Description must be associated with the rule.
A code table lookup is typically defined for table level validation checks only.
Refer to:
2.6.3 Code Table Lookup Check Examples
Also See