InterSystems IRIS TSQL Code 198 Browse mode is invalid for statements co

In this post, you’ll learn about the SQL error code 198 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

198

Reason for the Error code 198 in InterSystems IRIS DBMS

Browse mode is invalid for statements containing a UNION operator.