Unit of measure mismatch (i.e. - Purchase Order in KG, invoice in LB)

Line item mismatch on Invoice vs. Purchase Order (if one line is incorrect, the entire invoice does not pay)

Currency Mismatch (i.e. Purchase Order in USD, Invoice in EURO)

Invoice missing a valid Purchase Order#

Invoice with Shopping Cart # only (not an approved PO# which is needed to pay)

Multiple Purchase Order #s listed on one invoice

"Blanket" format PO without available funds (where the quantity is the dollar amount and price is 1)

PO Quantity is "1" with multiple invoices submitted (line already used with no remaining funds to qualify)

Overbilling/Incorrect price vs. PO/contract/catalog (if applicable)

Freight-Only invoices against a material Purchase Order