https://help.tallysolutions.com/docs/te9rel64/release_notes/release_6.4.2.htm

Release Notes for Tally.ERP 9 Release 6.4.2 - India

Always upgrade to the latest release of Tally.ERP 9 to enjoy greater business benefits. Move to the latest release using the easy in-product update facility.

Product Improvements

In case you have recorded transactions with goods or services whose tax rates have changed, then such transactions may appear under Incomplete or Mismatch in Information in GST returns of earlier periods. This issue is resolved. We recommend that you download and use Tally.ERP 9 Release 6.4.2 .