Code 801 - Originating source (Mandatory) (R)Indicator 1: blank Indicator 2: Function Indicator 0 Original Cataloguing Agency 1 Transcribing Agency 2 Modifying Agency 3 Issuing AgencySubfield Codes $a Country (Not repeatable) $b Agency (Not repeatable) $c Date of Transaction (Not repeatable) $g Cataloguing Rules (Descriptive Conventions) (Repeatable) $2 System Code