nà fèn hé tong yǒu wèn tí duì fāng yāo qiú chè xiāo jiāo yì bù rán jiù zǒu fǎ lǜ chéng xù le

那份合同有问题，对方要求撤销交易，不然就走法律程序了。

There's a problem with that contract; the other party demanded to cancel the transaction, or else they would take legal action.