Discussion board where members can get started with Qlik Sense.
After loading 3 sheets of data from excel with common field names i'm getting a message that says no recommendations found after data profiling
May be it is due to the fact that your 3 sheets have same column header so that they are automatically concatened into Qlik Sense.
As you mention you have common fields in your sheets this is a normal behavior of qlik Sense
Hope it helps