ANSI/X9 X9.100-187-2008
Since the enactment of Check 21, there has been unprecedented adoption of image exchange. This standardreplaces the use of DSTU X9.37 and establishes the basis for U.S. check image exchange involving settlementbetween two financial institutions. ANS X9.100-180 has been adopted for Canadian internal country exchange. Itis only used in the U.S. for specialized applications and is not used for U.S. financial exchange.
This standard incorporates fixes and clarifications identified in various industry companion documents associatedwith DSTU X9.37. It also establishes requirements and limitations that are compatible with current industrypractice. However, this standard maintains flexibility in order to accommodate the needs of different institutionsand exchange networks. It does not have the extent of flexibility contained in ANS X9.100-180 and is not intendedto cover all types of image exchange.
Users of this standard should be aware that most financial exchanges utilize a companion document thatdefines the specific requirements and implementation rules for exchange within a particular network or institutionagreement. The companion document should reference the specific edition of this standard that applies with thespecific version of the companion document in use.This standard, including the normative annexes, establishes the file sequences, record types, and field formats tobe used for the electronic exchange of check MICR line, associated check processing data and check images inthe form of cash letters.
This standard does not address operational, implementation, or settlement issues. These issues may include, butare not limited to, a choice of: data and image compression, encryption, and transmission specifications and datarepresentation. The informative annexes attached to this standard provide information that may prove useful tothose planning to implement the standard.