[SOLVED] Import Activity

if you want more explicit format description, you can use help function (small button beside element type on import screen)
You'll find that "planification" correspond to "idPlanningMode" field.
So, with standard rule : idXxxxx is a link to Xxxxx object.
This means you must provide a value of "PlanningMode" that will fit activity element (scope="activity").
You can enter value as id (numeric value) or as name (text value).