[WB0097]:Questionnaire title contains characters that are not allowed

I have a problem when i created the second questionnaires, have some alert massages"[WB0097]:Questionnaire title contains characters that are not allowed. Only non Unicode letters, numbers, space and _ are allowed." how to solve this problem?

Dear Sengphachan,

which language you use in the title of the questionnaire? If your title contains Unicode letters, numbers, space and_ - it will show you an error.

Best regards,

Survey Solutions Team support