SR stands for Debt Service Ratio. It is a measure of how much of a borrower's income is used to repay their debts. The DSR is calculated by dividing the borrower's monthly debt payments by their monthly income.
A high DSR indicates that the borrower is spending a large portion of their income on debt repayment, which may make it difficult for them to afford other expenses. A low DSR, on the other hand, indicates that the borrower is spending a small portion of their income on debt repayment, which may make it easier for them to afford other expenses.