How to avoid duplication when student survey

12_CHILD SCREENING FORM BY CFM_Updated 10 April’23 at 3.15PM.xlsx (108.1 KB)

Hello, Kal_Lam, Would you help me in the attached file row number 44 (red color text) about how I set a formula for collecting unique Progress ID? e.g P57-99887766 input once, 2nd this time the same does not allow. Can you back a file with the formula?

Thanks in advance for the given time

@meaf, did you check this previous post?

Tried but not workng , Please see attached file and the required row number 44 with red color text, Can put the formulla and back to me. Then I will deploy
12_CHILD SCREENING FORM BY CFM_Updated 10 April’23 at 3.15PM.xlsx (108.0 KB)

It is very very important for me, Please KaL_Lam

Hello, Kal_Lam I am waiting for your response

@meaf, did you try the workaround (sample XLSForm) that was shared in my previous post?