I’m trying to import bank details on a vendor. And the SuiteAnswer that has a walkthrough says to select Custom Records, and then Entity Bank Details. But Entity Bank details is not in the list. Any idea what i’m doing wrong?

You can view all your Custom Records on Customization menu. The Entity Bank details custom table is created by the Netsutie payments bundle which you would already need to have installed if that’s how you are going to be using those bank details