In which situation would a supplier need to create an ad hoc invoice?

A supplier would need to create an ad hoc invoice when the invoice needs to be generated from a non-standard agreement. This situation often arises in procurement scenarios where a specific arrangement between the buyer and supplier does not fit typical purchase order workflows or preset terms within the procurement system.

Non-standard agreements may refer to unique pricing, special terms, or orders that are not captured through the regular purchase order process. In such cases, using an ad hoc invoice allows suppliers to bill for goods or services in a manner that reflects the peculiarities of their agreement with the buyer. This process ensures that the supplier can still receive payment while adhering to the specific conditions of their contract without needing to conform to a rigid invoicing structure.

Other situations, such as discrepancies in purchase orders, a desire to speed up payment processing, or opting out of using the Ariba Network, do not inherently necessitate the creation of an ad hoc invoice. Instead, they may involve other standard processes or negotiations to resolve issues outside the traditional procurement framework.