Symptoms
The error
The type of the field Invoice Layout\Total is incompatible with a Check Sum rule. System.InvalidCastException: Specified cast is not valid
appears after changing the type of the "Total" field from "Number" to "Amount of Money" in the invoice project.
Cause
This issue appears because of the incorrect conversion in the Invoice Layout\Total
script rule.
Resolution
The solution for this behavior is the modification of the Invoice Layout\Total
script rule. By default, the type of the total
variable in this script is double
:
double total = (double)( Context.Field("Total").Value );
This is causing the conversion error because the type of the "Total" field is now "Amount of Money". In order to fix it, please change the type of the total variable from double
to decimal
:
decimal total = (decimal)( Context.Field("Total").Value );
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