APEX

I am quite new to the world of APEX (3+ weeks) and have a question I can't seem to find an answer to. I have pages in my application that are linked to, they save data to the database (via <strong>Automatic Row Processing</strong>) and then link to another page automatically (thanks to a posting in this forum). However, when the page encounters an error when trying to write to the database (trying to insert a duplicate row), I don't know how to catch the error and display a message and link back to the original page. I see that the <strong>Automatic Row Processing</strong> process has <strong>error messages</strong>, but I don't know how or where to test for the presence of these errors/messages so that I can modify the process flow. Can someone help?



Thanks