I dont know why I am not permitted to access many items in documentation of community portal. what I missed to generate document showing the list of datagrid? 1-I added a microflow button to the datagrid passing thelist to the microflow 2-I created a template page containg the data grid of the samy object type. 3-inside microflow I created fileDocument object then added generate document ( where i specified the file and template and passed the list argument to that template. After running the following exception is raised: No datasource found for retrieving data for nested datagrid grid1 for document template Template_1.