Hi Akhil
As far as my knowledge, currency futures are similar to commodity futures. However underlying will be currency and there will be no delivery.
Just for your information:
We are using product type 70D. You can try creating one more product type and select "Category" accordingly.
Path for product type definition: SPRO --> Financial Supply Chain Management --> Treasury and Risk Management --> Listed Derivatives --> Master Data --> Product Types --> Define Product Types
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MG