How validate experience

Hi, I was working for very small startup before TCS but that startup didn't gave me PF or proper salary slips, we were just getting simple salary credited mail and salary in account so rn I have my bank statement and experience letter from company but don't have PF and Salary Slips, will this cause an issue in my next switch, FYI TCS was my oncampus company so they didn't ask these things.

Pls help