👉 A demurrer is a legal document that is used to challenge an order of payment or collection. It typically serves as a counter-claim against the party who has been paid or collected, and it allows the court to consider whether the amount due was in fact received by the original payer. Demurrers are often filed when a party believes they have been improperly denied payment or collection, such as through a delay in receiving payment for goods or services, an incorrect invoice, or any other reason that