属性
数据类型AN
必须?Optional
长度Min 10 / Max 10
Element
X12 EDI Release 00403
DAD
509Originating Company Identifier
A unique identifier designating the company initiating the funds transfer instructions. The first character is one-digit ANSI identification code designation (ICD) followed by the nine-digit identification number which may be an IRS employer identification number (EIN), data universal numbering system (DUNS), or a user assigned number; the ICD for an EIN is 1, DUNS is 3, user assigned number is 9
