how do I answer questions about packaging material and sustainability

Packaging usually falls under waste and scope 3, not under a separate item

There is no separate data point "sustainable packaging" in the VSME basic module. Questions about this in customer portals are almost always a translation of two things that do have a fixed place: how much packaging waste is generated and what material it consists of, and what contribution packaging makes to indirect emissions. You answer the first with the same figures you use for the question how much waste the company produces per year, possibly broken down by packaging material if you already keep track of that breakdown. The second belongs to emissions in the value chain, scope 3, because purchased packaging and its processing by the customer are in the categories of upstream and downstream goods of the GHG Protocol, not in scope 1 or 2.

If the portal specifically asks for the share of separately collected packaging waste, that is the same data point as separately collected waste in general, only filtered for packaging. If you have not registered that breakdown separately, you enter the total figure and indicate in the confirmation that it is the total waste figure, not a packaging-specific number. This way, the system does not enter a separation that you cannot substantiate, and the answer remains traceable to what is actually recorded.

Why there is no separate packaging data point

The VSME basic module has categories for total waste production and for separate collection, and the GHG Protocol has the scope classification for emissions; a separate category "packaging material" does not appear in either of them. Customer questionnaires about packaging are therefore a separate classification by the customer, built from the building blocks that these two standards already provide.