This developer pilot fish supports several software packages at his company — among them, an ERP system that includes sales and financial processing.

"Our accounting supervisor came into my office early one morning," says fish. "She wanted to know if we had any way of telling who might have updated a discount field on an invoice that was received by a customer two days earlier."

Turns out the customer had been promised a certain discount by the sales rep. But when the invoice arrived, no discount.

Customer complained to the sales rep, who called the accounting supervisor — and now it's fish's problem.

Fish checks the invoice on his system. Sure enough, no discount.

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