For receive all sensor datas, sometimes you have to modify the parameters of your sensor by SetUp Screen. The dfault values are not always correct. For kkep alive the battery, the construcor setup the minimum transmission by default You have to read the notice. But yes, the principal values are the Groups ID.
For exemple with Fibaro Motion multisensor you must modify some parameters for temperature report as if you want to receive it and the variation of temperature to generate report, etc...