I'm trying to receive in inventory from a PO and getting this basic error. Any idea where to start looking for the error?

Check script logs, if you've made any transaction fields using formulas lately, i would remove the formula and test

It was actually an issue with checked boxes in Accounting Preferences. My assembly builds now have drop down fields for Class and Department and I have to tab like 4 times to put in quantities for line items. I was trying to stop it from happening and it spilled over into PO receiving