The data in the file you uploaded is incorrect.
ISIN is assigned to listed and traded securities including stocks, bonds and warrants. It is not assigned to private and/or non-listed companies.
The ISIN is unique - two companies, bonds or even preferential shares / warrants of the same company cannot have the same ISIN.
Even partly paid shares of the same company have different ISINs. For example, the ISIN of Reliance Industries Limited fully-paid share (Rs 10 face value) is INE002A01018 whereas the ISIN of the partly paid share (Rs 5 face value) of the same company is IN9002A01032.