Retail POS error value cannot be null when pressing enter key twice on payment

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Posted on by Mark Lester

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We realized that when entering the amount and pressing the enter key 2 times, Retail POS behaves differently

1. Inputting the amount

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2. Pressing Enter key twice

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A transaction receipt will not be printed and it will throw an error value cannot be null. What i want to know is how do i locate the class that references this dll in the picture below so i could customize it and throw a different error message instead of the technical one. It only shows the dll's call stack.

1602.POSError.PNG

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Mark_Edel 160 on at

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RE: Retail POS error value cannot be null when pressing enter key twice on payment

We also encounter the same issue.. I hope someone can help us regarding this issue.

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