Cannot get key values when Parent or ChangeImage are null

[Phil_Waite]

Hi,

I have a Bot that adds rows to a parent and child table each.

I have a composite action to change status of a column in the parent table to a new value and then back when the child row has been added. This triggers an email to be sent after the child table has been added too.

I am getting the message in the subject line. Please see also the screenshot.

I'm not sure what the error message means. 

Thank you

[WillowMobileSys]

It might help to show the problem action mention in the error - "Action for Composite Parent and Child".

Do the child records have the Parent ID inserted at the time this Bot runs?

I suspect that when the Reference Rows expression is executed, it is getting a list of empty/null values.  Which, by the way, is difference than getting NO rows returned.