Singapore and neighbouring Indonesia are in dispute over discrepancies in their bilateral trade figures, it emerged Sunday.

The two have clashed over an apparent 2.49 billion US dollar gap in the figures compiled by Indonesia and Singapore for Indonesian exports to the citystate.

The spat emerged in a letter dated July 4 to Indonesian trade minister Rini Suwandi in which Singapore Trade and Industry

Minister George Yeo refuted alle-gbations that the city-state has not een transparent about its trade figures with Indonesia.

Discrepancies in trade data statistics between two countries are due to the different systems used to gather the figures and should not "surprise statisticians", Yeo said in the letter, made available to media over the weekend.

"As I explained to you in Khon Kaen (Thailand), discrepancies in the trade statistics of two countries should not surprise statisticians," Yeo said.

The two ministers had met in Thailand on the sidelines of an APEC meeting last month.

"It depends on the basis of compilation and other factors. Even when countries collect trade statistics on the same basis, time lags in capturing of data and valuation differences will lead to discrepancies," he said in response to a June 16 letter from his Indonesian counterpart.

Yeo said the city-state also has significant trade discrepancies with other countries including Malaysia, China and the United States.