Message SAP XSLT_TOOL420 - Unable to update result display

Diagnosis
The display of the result could not be updated. There are two possiblecauses for this:
1. The debugging session refers to a transformation with ABAP as target(the source is transformed directly into an ABAP data structure). Forthis type of transformation a result display in the XSLT debugger isnot supported at present.
2. An internal error occurred.