n is either 1 or 0. The default value is 0.
When DDLNo201 is enabled (n = 1), when an attempt is made to CREATE a previously existing table or view, InterSystems IRIS® data platform suppresses the SQLCODE -201 error. When this parameter is not enabled, InterSystems IRIS returns the error.
Changing This Parameter
On the SQL page of the Management Portal (System Administration > Configuration > SQL and Object Settings > SQL), select Ignore redundant DDL statements to suppress redundant SQLCODE errors.
You can also change DDLNo201 with the Config.SQL class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).