Visual to show duplicate transaction with 3 dimensions?

[#1]

Hey,

I am looking to visualize or "Flag" duplicate transaction amounts bases on Owner, Transaction Type, Date, and then flag the amount spent if they are the same? Any ideas? My first Idea was to concatenate the 3 dimension fields but I am not sure how I want to do this. 

[Clever_Anjos]

Hi,

Same need of this? Flagging duplicates?

[#3]

Yes, looking to see how I can visually show that the same owner,with same expense type, on the same date has the same spend, and flag it in a dashboard.