Updating approved supplier part numbers and manufacturers

I’m trying to fill in and correct a bunch of data in our system. We do not have manufacturer info populated and in many cases, the supplier part number has the manufacturer part number rather than the supplier number. I pulled out the info and corrected on a spreadsheet and now want to use an UBAQ to update. The problem I have is that the Update Processing mapping is looking for me to include fields that are not available:
Here is what the mapping is calling for:

Here is what is available:
image

What am I missing? Thanks in advance.

I would use the DMT tool