A case study from a real file. Names and Bill of Lading numbers changed; the sequence, the documents and the correction are unchanged.
Submitting multi-currency commercial invoices where converted exchange rates or decimal rounding fail to match the export customs declaration will cause immediate rejections from Burundi tracking note authorities. This case study details how our pre-screening audit caught a currency conversion mismatch across three invoices for a five-container shipment of factory machinery travelling from Durban to Burundi via Dar es Salaam, and how decimal precision updates secured an approved Burundi Electronic Cargo Tracking Note (ECTN).
The shipment
We recently managed the cargo tracking documentation for an industrial equipment shipment originating from the Port of Durban, South Africa, and destined for Bujumbura, Burundi. The cargo was routed by sea to the Port of Dar es Salaam, Tanzania, for onward overland transit. Under Burundian customs regulations, all maritime imports require a validated Burundi ECTN prior to arrival at the port of discharge.
The shipment comprised five 40-foot High Cube (40HC) containers carrying heavy factory machinery. To initiate the ECTN registration, the client submitted the required documentation.
What the audit found
During draft creation, our compliance operator conducted a cross-document audit of the financial totals. The client had provided three distinct commercial invoices for the equipment: two denominated in euros (EUR), the third billed in West African CFA francs (XOF). The export customs declaration, in contrast, reported the consolidated shipment value strictly in euros.
Submitting multi-currency invoices is acceptable. The problem was the conversion applied to the XOF invoice, which relied on a rounded exchange rate without decimal precision. When our operator recalculated the combined value of all three invoices, the converted sum differed from the exact EUR figure on the export customs declaration by several cents.
Why a few cents matter
Burundian authorities use strict, automated validation tools that cross-check financial totals down to the exact cent. Any mathematical mismatch leads to an immediate system rejection — and, for cargo routed this way, a clearance hold at Dar es Salaam.
The correction
Having caught the conversion error early, our operator alerted the client and advised their finance team to adjust the conversion ratio on the XOF invoice to full decimal precision, so that the recalculated EUR total aligned exactly with the export customs declaration.
The client returned revised invoices with the corrected conversion ratios. Our operator verified that all currency values, piece counts and weights matched across every document, updated the certificate draft and, once the client had approved it, submitted the application to the Burundian tracking authority. The Burundi ECTN was approved and issued without delay, and the cargo moved through Dar es Salaam to Burundi on schedule.
What to check before you file
- Every invoice against the export declaration. When the invoices are in more than one currency, convert each one and add them up — the sum has to equal the declared value to the cent.
- The exchange rate on any converted invoice. Use the rate at full decimal precision, not a rounded figure.
- Piece counts and weights across all documents, not only the money.
For the full document list for this destination, see the Burundi ECTN page.