The issue refers to
https://issues.jboss.org/browse/TEIID-5782 where if was found, that
the GENERATED_KEY function does result in an validation error
validation error: TEIID31119 Symbol key.fkProduct is specified with an unknown group context
in an INSERT trigger when the view on which the insert is called has a compound primary key which consists of a mix of AUTO_INCREMENT and non-AUTO_INCREMENT variables.
A code example can be found in the following comment