If you’re facing issues with the FBR digital invoice creation, here are some practical steps to troubleshoot and resolve the error:

Common fields that trigger errors in the FBR system:

• UOM → Select correct unit.
• HS Code → select HS code according to the item and UOM.
• NTN & Registration Type → Ensure valid NTN and correct type.
• Province → Choose the right province, don’t leave blank.
• Item Name → Use clear, standard names without special characters.
• Sale Type → Pick correct type.
• Scenario → Select proper scenario.

https://www.youtube.com/watch?v=nuMY1hoDNkI&t=1s