I don't mean to be rude, but you've just described the problem. How can you be at a loss as to what to do?

Open file 1

• For each record in file 1
  • break the record into fields
  • update a hash using Product Number and Produce Name as the keys, with a value of Univers ID

Open file 2

• For each record in file 2
  • break the record into fields
  • Is there a hash with Product Number and Produce Name as the keys?
    • If so, write out the keys and the value

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