With a joint and several guarantee, each partner is responsible for part of the predetermined debt, but may be obliged to assume full responsibility in case of delay of the other partner. The guarantor`s obligations under this guarantee of validity are absolute and unconditional, regardless of the validity, regularity or performance of a guarantee obligation, instrument or agreement that proves or is related to it, or any other circumstance that may constitute a defence or relief of the guarantor. A validity guarantee is preferable to a personal guarantee, not least because the postman takes over most of the risk associated with the invoices they buy. Your business is protected in most cases when your customers use their default accounts. .