Hello,
We are trying to create a GI that flags if an more than one item has the same customer cross reference/ alternate IDs.
In an ideal situation - the result for the below should be 3.

We concatenated Alternate ID and Customer ID and did a count on the concatenation

We grouped the generic inquiry by AlternateID. However, the count only shows up as 1.

Is there a way to display all line items, their alternate id, customer and counts. The expected result should look like below with an extra column towards the end called count with values 3 (in this scenario).

Could you please advise if this is achievable?