I've noticed an issue when you're using a SharePoint Designer workflow, and you use the Current Item:LookupField in a task or an email, and that lookup value is blank, and you're setting it to use Lookup Values, Comma Delimited
You'll get an error of something like:
System.InvalidOperationException: Values must be bound to a non-null expression before ForEach activity 'ForEach<DynamicValue>' can be used.
If you set it as a string, you'll see the JSON that's coming back, and for empty values it returns the string:
{"results":null}
Since Designer can't seem to handle that null object, for any lookup values you can do the following:
1) Save the value as type String
2) Test for the empty/null case by testing for the {"results":null} string
3) Then set the value accordingly
So in my case, I've setup my lookup values as such:
Where in Step 1 I'm using Current Item:Site Access As String, and inside the if statement I'm using the Current Item:Site Access as Lookup Values, Comma Delimited.
8 comments:
THANK YOU THANK YOU THANK YOU!!!! Worked for me.
Nice blog and valuable for all people. Thank you for posting this.
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it worked like a Charm :) Thanks a ton
It's very useful blog post with inforamtive and insightful content and i had good experience with this information.
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