Imagine you have a toy train set that you love to play with. One day, you accidentally break one of the train cars and your mom tells you that you can't play with it until it's fixed. So, you take the broken train car to your dad, who helps you fix it and you can now play with your train set again. This is like a "first redemption."
Now, let's say that a few days later, you break the same train car again. Your mom might say that you can't play with it until you fix it yourself this time. So, you go back to your dad and he teaches you how to fix the train car yourself. Once you've fixed it, your mom lets you play with your train again. This is like the "second redemption" - you fixed your mistake all by yourself and earned your toy train back.
In the world of finance, redemption usually refers to the act of buying back a security or investment. For example, a mutual fund might redeem shares of the fund if an investor wants to sell. In some cases, a company might also "redeem" its own debt by buying it back from investors. In these cases, a series of steps must be taken, including notifying investors of the redemption and making payments to those who are redeeming their shares or debt.
With a second redemption, it means that an investment or debt has been redeemed or bought back twice. This might happen if there is a mistake or error made in the redemption process the first time around. Once the mistake is corrected, the investment or debt may be redeemed again.