How to analyse a A12 computation that results in a "VALUE_ERROR: The calculated value is not valid for the field"?

Kernel
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1

I have a document model with some computations. When I run a computation on it I get some errors. One of them is:

Entity: /Calculation[1]/CalculationResults[1]/PerPersonTotalOrder[1]/Net[1] Type: VALUE_ERROR Message: The calculated value is not valid for the field. ErrorCode: berechnungsWertFehler Rule: formalePruefung

The field mentioned in the error message is a number with 0 to 2 decimal places. Looking at the computation for that field it should only produce values with that scale:

RoundAccounting([/Calculation/CalculationResults/TotalOrder/Net] / [/General/CateredPersons], 2)

What is the “calculated value” the message mentions? And is the error actually referring to a computed value not matching a fields declaration? Because in the debugger I see that the error is stored in com.mgmtp.a12.kernel.md.rt.internal.service.DocumentComputationResultImpl.formalErrorsInOperands? How can I find out what the problem for such cases actually is?

2

I did not look into it thoroughly, but it seems, this error could happen with a division by zero error.
Is CateredPersons 0 in the case of the error? You usually should check these cases in the computation itself when using divisions and specify what value would be appropriate in that case or omit computation for that case.