BMEcat - How to add ETIM and UNSPSC?

Hi all, From Nordics we have the requirement to add UNSPSC classes in addition to ETIM. There is an example in the guideline V5-0 (p.60) on how to add UNSPSC. However, since element REFERENCE_FEATURE_SYSTEM_NAME is single-valued instead of multi-valued, we can't add both ETIM and UNSPSC in the same BMEcat. Do we do something wrong? If yes, would be great if someone can forward a BMEcat where both ETIM and UNSPSC is included (for the same product). If not, I propose to make REFERENCE_FEATURE_SYSTEM_NAME multi-valued and publish a BMEcat 5.02 version. What do you think? Thanks very much & BR Nico

Update: ETIM DE could help with my question. Solution is that element PRODUCT_FEATURE is multiple. Attached screenshot helps to understand.