In QuickBooks desktop custom fields are user specified data fields (data extensions) that can be attached to lists (ie Customer, Items, Accounts or Employees or to transactions
. You can import custom fields on lists into QuickBooks from Text files or Excel spreadsheets directly using the Zed Axis
Troubleshooting common errors:
Error: DataExtName... already exists - Please check to make sure that the name of the custom field matches the case-sensitive spelling in QuickBooks ie letters are upper case or lower case respectively
Error Custom Field Values data format errors - Custom field data can be set to a specific format like Text, Numbers only, Dates, Multiple-choice list, Telephone formats. If you import data to the custom field that is not in the correct data format then you will get an error. You can check the required format for the custom data field by editing the field definitions in QuickBooks
Error (no detail description provided) - When setting the DataExtName or the label for the custom field please make sure the name uses the same capitalization (ie case sensitive) that you see on Define Fields area in QuickBooks.