They were uncertain of the total value of the transaction.

他们不清楚这笔交易的总额。

《柯林斯英汉双解大词典》

Messages commonly contain information about the value of a transaction, where it originated (which store or ATM), card account number, and bank sort code.

消息通常包含有关交易金额、交易的发起位置(商店或atm)、卡帐号和银行代码的信息。

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If defined as NOT NULL, the value corresponds to the start time associated with the most recent transaction (the value of the as ROW BEGIN column).

如果定义为NOT NULL，该值会对应于与最近的事务相关联的开始时间(AS ROW begin列的值)。

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Along with the explosion in mobile technology to support commerce, startups like LevelUp have begun disrupting the payments market by offering free payment processing in return for paid loyalty and marketing services, showing that we are quickly moving into an age where the value of payment data exceeds the value of transaction fees.

FORBES: Mobile Payments: The Case For Choosing An Open Platform

The transaction fee (also known as the discount fee) is the commission charged to merchants as a percentage of the dollar value of transaction on American Express cards.

FORBES: American Express Charging Toward $50

They will have to assess whether such transactions fall under the 'related party transaction' provisions of the FFP regulations and if so, what the fair value of the transaction really is.

CNN: STORY HIGHLIGHTS