I completed a DS160 online application form for the US embassy in Barbados. I got a confirmation page, but it was not printed legibly. I do not have the application ID. Can I retrieve the confirmation page without it, possibly with the confirmation barcode number?
The first step would be to get the application id, which you can do through the State Department's Electronic Application Center tool to Retrieve an Application ID.
When you complete that, it should take you to the last page you completed. If that is not the confirmation page print function, then go to the Consular Electronic Application Center and select the Embassy/Consulate at which you applied (Barbados). Select Option C-Retrieve Application and, with your application ID number, you can view and print your confirmation page.