anybody scripted inventory detail (bins) in 2.0? is there anything crazy? running into a weirdly vague error:

"You have entered an Invalid Field Value 2 for the following field: binnumber"

have tried multiple bins, and setting with internal id or name, etc etc. fwiw it's a line on an item receipt and using the same data (source po, line, bin, qty) i can complete the receipt without issues via the UI. generally flummoxed.