Error: Sequence contains more than one matching element

Version 4 V4 Question
1

what does this error mean

2

Could mean a bazillion things. We would not know unless we saw the Error Details. But typically its a bad constraint.

3

i think its related to an action i am doing

Top-level Exception
Type: System.InvalidOperationException
Message: Sequence contains more than one matching element
Source: System.Core
Stack Trace: at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable1 source, Func2 predicate)
at Samba.Domain.Models.Accounts.AccountTransactionDocument.UpdateSingletonTransactionAmount(Int32 transactionTypeId, String transactionName, Decimal amount, Decimal exchangeRate, IEnumerable1 accountDataList) at Samba.Domain.Models.Tickets.Calculation.UpdateCalculationTransaction(AccountTransactionDocument document, Decimal amount, Decimal exchangeRate, IEnumerable1 accountDataList)
at Samba.Domain.Models.Tickets.Ticket.CalculateServices(IEnumerable`1 calculations, Decimal sum)
at Samba.Domain.Models.Tickets.Ticket.GetSum()

4

Share the action. It looks like its a Create Account Document or something similar.

5

afeec243cd8c381f.png1366×768 22.2 KB

ea64553325f8c1f5.png1366×768 101 KB

6

ya if i call this action then its giving error

i just want to update the accounts

7

You are trying hard to get a Ticket level service charge to work per order. That is probably not a very good method to do this.

BTW: you can not remove a ticket wide service charge at product level. You are stubbornly trying to it which is really not a bad thing as you will learn through this process.

8

oh ok you men the button is mapped to order line and the transaction action should be called on ticket line mapping only

ya now getting hang of it since i want to accomplish my task i have to play around and get it done

9

In your rule what is the Discount 10% action? Also why the show message with Order price?

10

Discount -10% is to give -10% discount on order line.
i was using the show message to show the visible price