Part 1

1. login to Admin Console
2. go to Website & Content → Structure & Data section
3. click on Sections tab in main frame
4. open Directory category for editing
5. change value in Created On to become invalid (e.g. replace one digit with a letter)
6. clear value of Section Title field
7. press Save button
8. confirm, that validation error for Section Title field looks like Field is required
9. confirm, that validation error for Created On field looks like Incorrect date format, please use (XXX) ex. (YYY), where XXX is field format and YYY is sample value in that format
10. confirm, that no other notices/warnings other than validation ones are present in Debugger Report
11. press Cancel to close popup/modal window

Part 2

1. login to Admin Console
2. go to Website & Content → Labels & Phrases section
3. in translation of la_err_bad_date_format phrase replace {format} and {sample} with '%s`
4. repeat test in Part 1