ERP solutions outsourcing party days of product receipt Tip: could not convert variant of type (null) into type (double)

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Literally: not speak NULL data type is converted into DOUBLE.

DOUBLE definitely turn when a field problem, one word table investigation, found at the exchange rate is not defined. Currency mouse, select the associated right to enter [the exchange rate] is set, the corresponding currency exchange rate set. And do it again would not prompt this error.