Maximum number of Rows - Analysis office

Hi

Just wanted to know, when analysis office gives message of maximum number of rows reached.

1) whether it is maximum number of rows retrieved from back end ( hana model ) or maximum number of rows in excel

for example.

if I run the report with 30000 rows and 4 column. it comes.

if I run the report with 30000 rows and 12 column it gives error

Regards

Amar