Hi,
This issue is addressed and fixed on BI4.0 SP06 and above. See from "Release Restrictions ■ SAPBusinessObjects Business Intelligence Suite 4.0 SP8".
ADAPT01663880
Description
When you try to open a report created in XI 3.1 SP05 and migrated to XI 4.0 SP04 patches 2 and 3, the following error messages appear: An internal error occurred while calling 'getMap' API. (Error: ERR_WIS_30270) (Error: INF)
New Behavior
This problem is resolved.
If you already have SP06 or above, I'd suggest you to log a SAP BO support ticket for this.
Hope this helps,
Jin-Chong