If you were worried about whether a certain field in a purchase order was input properly, would you be more concerned with input validity, input completeness or input accuracy?

If you wanted to make sure that all purchase orders were accepted at the time they were input, would you be more concerned with input validity, input completeness or input accuracy?

If you wanted to make sure that a payment input was supported by an approved invoice, would you be more concerned with input validity, input completeness or input accuracy?