Exceptions and tts

You are not able to catch exception inside tts scope:

ttsbegin;
try
{
    throw error("Exception");
}
catch
{
    info("Exception is caught"); // We won't get here
}
ttscommit;

However you can catch exception that was thrown inside tts scope from outside:

try
{
    ttsbegin;
    throw error("Exception");
    ttscommit;
}
catch
{
    info("Exception is caught"); // We will get here
}