2013 workflow on Office 365 list - wf failing

Occasional Visitor

hi all, im getting the error below on a fairly basic workflow that is updating data in a field on one list to a field on another list.  On both lists the field is a 'singe line if text' field so should be streaight forward.

 

equestorId: 74288925-9c81-24e5-0000-000000000000. Details: An unhandled exception occurred during the execution of the workflow instance. Exception details: System.ArgumentNullException: Value cannot be null. Parameter name: String at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at Microsoft.Activities.Expressions.ParseNumber`1.Execute(CodeActivityContext context) at System.Activities.CodeActivity`1.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation) Exception from activity ParseNumber<Int32> IsEqualNumber<Int32> Not If Stage 1 Sequence Flowchart Sequence CreateRowInTribeCosts.WorkflowXaml_c5e78c26_06d1_4342_a84d_4794c71061e4

 

thanks

Colin

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