Regarding self employed work experience

Hii, I am going to attempt CAT2023 this year, but I have one confusion regarding work experience. I am currently running a small business of self study centre but i don’t file gst and tax. But i have the udyog aadhar certificate that I had registered my business with msme portal of govt of india. Can I apply fpr work experience on the basis of that msme certificate that I have. It’s a certificate of registration of my business with date mentioned on it which date the business started and what at which date the commencement of business happened. I am very confused regarding this. I want someone who has such type of experience, like a self employed person with any such certificate who got admission and proved work ex, or any person who has the relevant knowledge can help me by answering my question. Thanks in advance.