Hi Kanij Sharme this might seem a basic question but have you searched all sheets in the import file for the incorrect bank code to see if its inside the file anywhere?  Perhaps do a Search and Replace between the incorrect and correct bank code.  The other thing you can do is once you click File -> Import and are about to import the data, right-click on the Contents cell next to Bank Code and hard-set the value to the correct Bank Code, then click OK to import:

Good Luck!

Thanks a lot, I will try this. but this problem arise when I try to import more than one bank at the same time.

OK, also double-check your BANK and SEQUENCENO codes line up between Bank_Entries_Header and Bank_Entries.  This is most important to check for your issue.  Good luck!