The error may be caused because of an additional separator (Comma in case of a CSV file, Tab in case of a TSV file) or an empty column present on a particular line. Remove the separator and empty columns and save the file. Finally, import the file into Zoho Books, match the corresponding fields and it should work perfectly fine.
P.S: Also, while importing files, please make sure the columns do not have unncecessary separators(Commas or Tabs) or characters as this might lead to causing the above error.
MTD ready accounting
software for small