the preferred way to force a program abend on iSeries?

List,

Another newbie question. In the mainframe world, if your application program 
detects a condition that it cannot handle it (usually) will force an abend. 
There are many ways to do this. One common method for doing this is to call 
a non-existent program with a self-documenting name like "DUMPME" or 
"ABORT". In the iSeries world, I understand that if your application calls a 
program that it can't find, it will display a message on the operator 
console that requires a response.

What is the preferred way to handle a program-induced abend?

Can I/should I avoid/suppress an operator response?

Is there an API that can be called from COBOL to force an abnormal end (and 
get a full dump) but won't require an operator response?

Your suggestions and thoughts on this. As always TIA!