The Supplement to the Uniform Customs and Practice for Documentary Credits for Electronic Presentation (eUCP) supplements the Uniform Customs and Practice for Documentary Credits (UCP). The eUCP will apply to a credit that must indicates as follows: (1)( ) This credit is subject to eUCP. (2)( ) This credit is subject to UCP600 and eUCP. (3)( ) This credit is subject to UCP600 and its supplement.