Can OBC-NCL certificate mistake affect government job during verification process?

Sir, I am from Haryana, where we have a Family ID that contains all family details, including income. My father is a Group C employee, and his income is above ₹8 lakh, but in the Family ID, it shows ₹8 lakh. I do not know how it gets updated. Based on this, I applied for an OBC-NCL certificate. In the online form, it was clearly mentioned to provide income from the last three financial years, excluding salary and agriculture income. However, without checking the ITR, I filled in the income approximately. I still got the OBC certificate, and based on that, I got a government job. Now I am confused about whether I should join or not, because during background verification there might be a mismatch, and I could be removed from the job. Please advise me on what I should do.