title: Include a text message in ASSERT?
body: <p>I have an ABAP line like this:</p>
  <pre><code>assert ( cond = 'x' ).
  </code></pre>
  <p>The caller of this RFC function gets a meaningless message that some assertion failed and I would like to supply an additional explanatory text. This way I can easily find the matching line if the customer send me the error message.</p>
  <p>How to do this the most simple way in ABAP?</p>
  <p><strong>Update</strong>: This question focused on <code>assert</code>, but this is the wrong track in ABAP, I wrote a new and better question here: <a href="https://stackoverflow.com/questions/52661797/raise-exception-with-custom-message-in-abap">Raise Exception with custom message in ABAP</a></p>