Troubleshooting
FBR Digital Invoice Error Codes: A Practical Troubleshooting Guide
Diagnose common seller, buyer, date, invoice type, sale type, HS code, rate and amount errors using the published API error catalogue.
Diagnose common seller, buyer, date, invoice type, sale type, HS code, rate and amount errors using the published API error catalogue.
Read the code and the context
The official API specification publishes numbered sales-error messages. Codes 0001 and 0002 address seller or buyer registration problems; 0003 and 0011 concern invoice type; 0005 concerns date format; 0012 and 0013 concern buyer registration type and sale type; 0019 and 0020 concern HS code and rate. Always save the complete item-level response because a short message without the affected line can be misleading.
Separate data errors from technical failures
A validation message is not the same as a timeout, DNS failure, expired credential or unavailable endpoint. First determine whether the request reached the service and produced a structured response. Retry transport failures under a controlled policy; correct data errors at their source before resubmission.
Fix master data, not only one invoice
If an HS code, UOM, buyer registration type or seller identifier is wrong, inspect the customer or product master used to create it. A one-off edit may let one invoice proceed while the next hundred repeat the same failure. Record the cause, correction, reviewer and affected invoices.
Avoid unsafe retry loops
Give each invoice a permanent internal reference and use idempotent controls so staff cannot create duplicates by repeatedly pressing submit. Queue temporary failures, apply increasing retry intervals and stop automatic retries when the service returns a business-validation error. Never replace a rejected invoice with an unrelated new number merely to hide the history.
Create an error-resolution dashboard
Group issues by error code, product, customer, branch and age. Show the responsible owner and next action. High-frequency errors reveal weak master data or training; old errors reveal ownership gaps. A weekly root-cause review reduces failures more effectively than treating every response as an isolated technical incident.
Official sources and review note
Reviewed against these public sources on 21 October 2026. This article is educational information, not tax or legal advice. Confirm the latest law, notifications, technical documents and professional advice applicable to your business.