Master data as a data target

Hi,

I am trying to make reporting on master data.I created a master data and in the master data/text tab I also gave the Infoarea name and I got tick mark master data as a data target,k.and master data is also appearing in the data target heading.and also My communication structure is active.

But when I tried to create an update rule it is throwing an error as given below.

this is urgent.

Plz go through below diagnosis :

Diagnosis:

The data source is not active.

Procedure:

Create the data source in the Administrator Workbench and activate it.