Level 3 - Calculate Hash / "If a new Item is fetched Grab it's significant data for logging: Value cannot be null. Parameter name: source"

Hello,
I need a help.
After intermediate run, The error occured.
“If a new Item is fetched Grab it’s significant data for logging: Value cannot be null.
Parameter name: source”

I used message box to check “in_TransactionNumber” and it is 0.

What is wrong? Where can I check?

Well, if your “in_TransactionNumber” is not null, then “dt_WorkItems” probably is!
Are you assigning any values to this DataTable? Maybe use the “Build DataTable” activity to try this with a few test values :wink:

Cheers, Lukas

@111132

Could you please print below value also using Message Box activity and check it once.

   dt_WorkItems.Count

If it’s giving error then there should be error at the time of scraping data or Arguments are not passed properly. Could you please run the workflow in debug mode and check it.

Thank you for your assistance.

dt_WorkItems.count ; Error

I’ve attached the jpg related to dt_Workitems.(Fig 1)

When Extract Data, The argument type is DataTable.(Fig 2)

And In “Invoke GetTransactionData workflow” the argument type is DataRow (Fig3)

I’ve attached csv file of Extact Data.(Fig 4)

How can I adjust type of argument?

I’m looking forward your kind help.