InterSystems IRIS TSQL Code 150 Both terms of an outer join must contain

In this post, you’ll learn about the SQL error code 150 in InterSystems IRIS database the reason why you are receiving the TSQL message when using the InterSystems IRIS data platform

Error Code :

150

Reason for the Error code 150 in InterSystems IRIS DBMS

Both terms of an outer join must contain columns.