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4 export invoice errors that will stop goods for 3 days

By Marek Zapała, Senior auditor·September 12, 2024·6 min read

Document errors are the most common reason why trucks stand at the Dorohusk crossing instead of driving to the customer. Based on 47 audits conducted at Lublin Union GR & Audit in September 2024, we identified the points that most often cause customs clearance to fail. The numbers don't lie – one wrong comma costs more than a driver's daily wage.

Too general a description of goods on the invoice

In October 2024, we checked 47 customs declarations for companies from the Lublin area. The most common problem was too general a description of the goods. Instead of entering 'brake discs for agricultural machinery type X', exporters simply wrote 'parts'. A customs officer at the Dorohusk crossing stopped the transport for 3 business days because the description did not match the customs tariff code. Such delays cost an average of 1,150 PLN for each day a truck spends in the buffer parking lot.

We often encounter a lack of accurate weight specifications for each of the 124 items in a batch of goods. If the net weight differs from that declared on the invoice by more than 4.7%, the customs system automatically flags the document for physical inspection. Then the truck ends up on the ramp, which takes another 5 hours, and you pay for unloading and reloading. We check facts, not promises – one imprecise adjective in the description can block payment from a contract for nearly two weeks.

One imprecise adjective in the goods description can block payment from a large contract for nearly two weeks.
Too general a description of goods on the invoice

Incorrect currency and rounding of amounts

Currency and exchange rate conversion methods are another flashpoint we catch during audits at Lublin Union GR & Audit. A small printing house from Lublin recently issued an invoice in euros but provided the transport costs to the border in zlotys, forgetting to provide the previous day's exchange rate. The customs office rejected the document just 14 minutes after the declaration was sent. The company had to issue a correction, which, with an exchange rate difference of 0.0421 PLN, generated an error in the VAT tax base.

Analyzing 83 cases from the last six months, we noticed that comma errors in calculating units of measure are common among new exporters. When you sell goods in linear meters and the invoice states pieces without a clear conversion factor, the customs system throws a critical error. Without watering it down with theory – every invoice must pass through a two-person check before being sent to the customs agency, because corrections at the border at 11:00 PM are almost impossible to carry out.

Incorrect currency and rounding of amounts

Using outdated Incoterms codes

Improper Incoterms 2020 codes are the bane of transports traveling from the Lublin region to the East. In July 2024, one local company entered the EXW formula on the invoice instead of FCA Lublin. The problem is that under EXW, the exporter formally has no obligation to perform export customs clearance. During a potential tax audit, this means a lack of proof of export, i.e., an IE599 message. Without this piece of paper, you have no right to apply the 0% VAT rate, which is a massive financial risk.

This is not just a matter of paperwork, but real money in the company's coffers. In one specific case, with a contract worth 42,300 PLN, the lack of a correct Incoterms code on the invoice prevented the quick recovery of 9,729 PLN in VAT. The border is not just a line on a map – it is a place where every abbreviation has its legal price. We teach our clients that the argument 'we've always done it this way' does not work on an official who has a non-compliant document in front of them.

The border is not just a line on a map – it is a place where every abbreviation has its specific legal and financial price.
Using outdated Incoterms codes

Lack of declaration of origin of goods

A lack of a clear declaration of the origin of the goods results in the assessment of customs duty, which could have been easily avoided. If you export products worth over EUR 6,000, you must have an authorized exporter number or include a statement with a specific, rigid wording on the invoice. In August, we found 7 invoices where the formula was wrong by just one word. The goods stood at the terminal for 4 days, and the customer in Turkey was forced to pay 12% duty that was not supposed to be there.

As a result of this mistake, the company from Lublin had to pay a 3,800 PLN contractual penalty for the delay in delivery. Customs documentation does not tolerate improvisation or creative writing. Every piece of information about the country of origin must be supported by purchase invoices for raw materials from your 14 sub-suppliers, which you keep in your archive. At Lublin Union GR & Audit, we check these connections before the goods leave the warehouse, because at the customs terminal it is already too late to look for missing certificates.

Lack of declaration of origin of goods