Error Exception

can anyone tell me why this error generates me?
I would be very grateful for your help.

The error is because either the ‘in_TransanctionNumber’ or the ‘WorkItems.count’ variables used in the If statement is null.

but I followed the instructions of the guide, and as you can see they do not say to assign them any kind of value. @Vinutha

@momi_fede,Set in_transactionNumber=1 in the arguments and execute.

GetTransactionData.xaml (8.3 KB)
the error still insists … please could you check? @sreekanth

@momi_fede Try this workflow.

GetTransactionData.xaml (8.4 KB)