British fast-fashion retailer ASOS said on Friday it is in talks with the German customs authority relating to a legal dispute over import duty underpayments.

The Financial Times reported earlier in the day that German tax authorities are pursuing ASOS for unpaid customs duties in a legal dispute over customs declarations on the retailer’s shipments crossing the German border over several years.

ASOS said it was contesting the assessments by the German customs authority and that it considered the maximum exposure to be immaterial.

The company said it has reviewed more than 95 percent of the tens of thousands of customs declarations under scrutiny.

Based on its analysis, ASOS estimates the additional liability at about €0.5 million ($585,900).

The company had warned last month that its annual revenue would fall short of market expectations due to weak consumer demand, with profit expected to land at the lower end of its forecast range.

It has been working to revive its fast-fashion appeal among its core base of shoppers in their 20s, while cutting costs amid intensifying competition from Chinese rivals and the impact of US trade.

By Disha Mishra; Editor: Janane Venkatraman

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