Part plus attribute bulkloader error

[campmlc]

I"m trying to bulkload parts plus attributes as subsamples from a parent part ID. Each parent has two subsamples to be created. I need to add the parent part to a loan, but I'm trying to create the part subsamples first. I'm attaching the file, plus it's associated error. Note that "Derived from" is not a field name in the Parts+attributes bulkload template, althought parentPartID is. I've used the full https Part ID as the PID value here.

cf_temp_parts_download with error.csv

[campmlc]

I went ahead and added the parent parts to the loan, as I need to get this out today. But I still need to bulkload the part subsamples of these parents, which will be in collection.

[dustymc]

Going dev for diagnosis