Reg SQL Update Query

Please find the problem statement below:

It is similar to the cards we use for metro trains

we add pass or and other product or add money to wallet and such kind of stuff.

So problem here is when following the below steps
1.add money to wallet, say 100 rs
2.Again add money to wallet say 100rs
3.Reverse the money added in step 2 (this is how reversal works here, last added money to wallet gets reversed first)
4. Reverse the money added in Step 1

In this scenario one of the fields(Reverse_RP_TXN_ID) in table(highlighted in excel sheet) is not getting updated as expected

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When the follwing steps are followed, it works good:
1.add money to wallet say 200 rs
2.Again add money to wallet say 100rs
3.Reverse the money added in step 2 (reversal for 100 rs added)
4....