Hello everyone!
I am struggling with trying to use multirow Formula and creating a unique key column to use in this tool.
Here's what I have:

We have an banking account column, a transaction column Called "Historical_description" and an ID column that refers to the number that specifies the transaction.
I need to create a validation process which creates an array (block) with each payment (TED receivable -> Balance Blocking -> Balance Unblocking). Those 3 steps exist FOR ONE payment only that is called "TED Receivable".
I tried to concatenate a few columns to create an unique key that could be used in the multirow tool, but no success... Do you guys have any clue or hints to give me?
Thanks!