In the master data maintenance of customer and vendors in GnuCash it is mandatory to fill at least one of the billing address fields. However, with the Import Customers & Vendors functions, data rows without any address data are processed, creating customers and vendors without an address.
Created attachment 373117 [details] Import file to illustrate the bug Import data file with blanks in all 4 address fields. Import function creates customer/vendor without address.
Bug 797029 - Import Customer & Vendors: blank name and company in import data row crashes GnuCash
This is fixed and will be released in GnuCash 3.5. Thanks for the report.