To get the DTP you need to be 7.0 version flow, as expert explain you are still 3.5 version. Lots of documents are there to know about this. Migrate the data Datasource and flow.
To get the DTP you need to be 7.0 version flow, as expert explain you are still 3.5 version. Lots of documents are there to know about this. Migrate the data Datasource and flow.