Error message at app start

[Rene_Kunig]

Hello,

I have been using this message since the latest time when launching my app. However, I can't assign what triggers it. Can someone give me a tip on this?

Der angeforderte Vorgang ist ungültig. Serverantwort: The right side of the "LessThan" operator can't be NULL.

Thank you for Help

René

[Pstork1]

Somewhere in your App you have a formula that uses an < operator.  The value on the left side of that formula is evaluating to null.  Probably a variable or field that is coming up with a null value.  To evaluate anything like that it has to be on the other side of the equation.

[PowerAddict · Accepted solution]

There's definitely an expression in your app that uses the less than operator AND the right side of the expression has a potential to be null. So you can do one of the two things: 

1. In the right hand side of the expression, check for null and provide a default value of some kind in case the right hand side is null. For example, if you are comparing dates like Date1<Date2, you could do Date1<If(!IsBlank(Date2),Date2,Today())

2. Use some other comparison e.g. if you are comparing dates like Date1< Date2 you could do DateDiff(Date1,Date2)<0

If you like this reply, please give kudos. And if this solves your problem, please accept this reply as the solution. Thanks!

Hardit(Haman)

[Rene_Kunig · Accepted solution]

Hello,

Thank you, that helped me

"2. Use some other comparison e.g. if you are comparing dates like Date1< Date2 you could do DateDiff(Date1,Date2)<0"

Mfg René

[PowerAddict]

Thats awesome, glad I could help!

[PowerAddict · Accepted solution]

Please accept my response as the solution so as to help others and acknowledge that my suggestion worked for you