If you expand or collapse the data rows of a total in the grid control, the system may not display the data rows with the relevant totals line. Clicking in the totals line may not work if a totals line contains columns (hotspots) that respond directly to a mouse click.
In addition, expanding or collapsing the overall total may not work at all.
Install the latest front-end patch.
The latest patches are available on the "SAP Service Marketplace" (http://service.sap.com/swcenter-main).
Use the following patch levels:
SAPGUI 46D: Patch level 632 or higher
SAPGUI 620: Patch level 30 or higher
You can read more about SAP ABAP