"if table doesn have a primary key." error in uipath

Getting below error for if block while checking condition. Not sure exactly it means ?
“if table doesnt have a primary key.” and what actions needs to be taken.

Hi @Saumyas84

In_ InvoiceNumber has value

Ashwin S

i think we can’t user the contains function on all the data table rows.

Please try ExtractDataTable(“ROW number”)(“ColumnNUmber”).ToString.COntains(in_InvoiceNUmber")

eg: ExtractDataTable(0)(0).ToString.COntains(in_InvoiceNUmber")