Hello Commons-Devs, I was looking into the issue and possible fixes reported in Jira issue: https://issues.apache.org/jira/browse/CSV-147
I have created a PR with possible code optimization to include more details into the exception message as discussed in the issue. PR link: https://github.com/apache/commons-csv/pull/347 Your effort in carrying this forward is appreciated. Thank you. Buddhi De Silva
