Error in BCAggregateAction : Source or target not selected

Dears,

Using Sepasoft Module Bussines Connector trying get SAP list materials I’ve following error:

caused by GatewayException: java.util.concurrent.ExecutionException: java.lang.Exception: Error in BCAggregateAction : Source or target not selected
caused by ExecutionException: java.util.concurrent.ExecutionException: java.lang.Exception: Error in BCAggregateAction : Source or target not selected

I’ll be gratefull if you could lend me a hand

Regards