R12.1.2: Internet Expenses may throw Java Unparseable errors

Following a lot of what I have been doing on the blog lately, My Oracle Support document "Expenses Unparseable Date Error" from note ID 1986536.1 has yet another lesson about verifying your application changes because this issue stems from an ICX profile option which changed with the patch/upgrade.  Sure R12.1.2 is lower than R12.1.3 that I see a lot of error reports for, and it seems like most people have gone to R12.1.3 also, but there is no reason we cannot learn something from this issue by preparing for this type of change going forward so that we do not get caught out by any of these changes in the future!