Hello Praveen,
From your statement it looks like you want to first replicate the scenario in quality system and based on the result you would do the same thing in production system. Please find the list of steps that you should perform in quality system.
1. Process the bank statement through transaction code FEBAN by giving date as 31.12.2015. It will post couple of documents.
2. Identify those documents. These will be cleared documents. So you have to reset and reverse those documents by using FBRA.
3. Then go to transaction code SE38 and execute the program RFEBKA96. In the selection screen give the application as 0001 and ID (This is the statement ID. It is a combination of Date and Satement number). If you don't know, then execute it by keeping it blank. The output will show the list of all statement for all the banks. First click on the Deselect All option. Now from sending bank column find and filter you bank. Then check the corresponding statement ID (It should be a combination of Year and statement number). Then select the corresponding check box and press the Delete Statements button. It will clear the buffer.
4. Then again go to transaction code FEBAN and upload the file with correct date as 31.12.2014.
This should resolve your problem. Please let me know if you still find any problem.
Regards,
Pintu