There are two basic types of docume
ntary credit. A revocable credit allows the foreign buyer to amend the credit / or even to cancel it /without giving prior notice to the exporter. The seller is therefore at great risk that the credit will be withdrawn. Revocable credits are not commonly used / because they do not provide a satisfactory security to the seller. An irrevocable credit / An irrevocable credit / therefore / gives greater security to the exporter // because the issuing bank will continue to guarantee payment even if the buyers changes his mind