Have you been requested to provide Master Data templates?
There are two separate files: RAW material and FINISHED product templates.
For MEAT: If you supply only carcass to METRO, then the information both in the unfinished and finished master data file is the same.
For FISH: If you supply only raw fish to METRO, then the information both in the unfinished and finished master data file is the same.
Please have a look hereby in the attachments the detailed explanation on how to use Templates or directly on PIER website (Tutorials -> General -> Master Data Section).