Default Messages editing

I was trying to edit few default messages ( eg. "This question is mandatory", Please select most 4 option) How we can edit this. Is anything available in template or C panel?

Hi, libi,
in this case you have to edit the translation file.
Here what is in the manual about it.

Customize an existing translation

Sometimes you want to modify an existing translation so it accommodates your particular survey situation better. In that case do the following:

Go to translate.limesurvey.org (external link), pick the LimeSurvey version you want to translate for and the particular language you want to modify.
On the bottom of the translation page you will find an option to export all strings as .po file. Do that and save it as *.po file to your local harddisk:

Download and install poEDIT
Start poEdit end edit the downloaded *.po file - modify the particular translations.
Save. When you save the .po file then automatically a .mo file is created too. That is the one LimeSurvey will read from.
Place the particular .mo file in the right language folder in /locale by replacing the existing one - for example for French this would be /locale/fr/LC_MESSAGES/fr.po
Done.

You find more in the manual " manual.limesurvey.org/LimeSurvey_Manual#Translating_LimeSurvey "

So you export your language file as *.po file and edit it with poedit. (e.g. poedit.net/ )

Best regards
Joffm

What Joffm says.

However, keep in mind that with an update of the software your modifications can be overwritten.

Hi I am trying to change the default text shown on 'Save your unfinished survey' page. Could you help me find the location of the text?

I am using Version 2.67.3+170728

Thanks,
Manasa