Hi, Try to use InsertInvoiceLineWithInvoiceNumber but I receive the following message: "Object reference not set to an instance of an object." I'm calling: Code: KashFlowAPI.InsertInvoiceLineWithInvoiceNumber("username", "password", invnum, invline, out strStatus, out strStatusDetail); Any ideas? Thanks
Good to hear. It'd be good if you could post details here. There's nothing more frustrating than googling an error and finding someone who says they've solved it but doesn't say how : )