属性
数据类型AN
必须?Optional
长度Min 1 / Max 4
Element
X12 EDI Release 00303
AK3
447Loop Identifier Code
Code identifying a loop within the transaction set which is bounded by the related LS and LE segments (corresponding LS and LE segments must have the same value for loop identifier). (Note: The loop ID number given on the transaction set diagram is recommended as the value for this data element in segments LS and LE.)
