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Back  RFI # 667: Multiple Interchange Envelopes

Formal vs. Informal Help Informal Formal


Robert Lapp


Recently we have been receiving EDI files containing multiple interchange envelopes (ISA/IEA). These submitters appear to be using the interchange envelope as a functional group.

Isn't the purpose of the intercahnge envelope to define the beginning and end of a file?

Submitter Assigned Keywords

Multiple Interchange Envelopes


The X12 standards provide no definition or instruction regarding the assemblage of X12 interchanges into “file” units for transmission and storage. The question raised: “Can a single file contain multiple ISA and IEA segments” is not addressed in the X12 standards. Thus it is not a violation of the X12 standards to assemble multiple interchanges in a file.


The official response to a formal RFI is a letter from the current ASC X12 chair. This website often displays a summary of the RFI. Click here to view a PDF of the letter for this RFI.
Submission 6/18/2008
Status Date 9/30/2008
Status F - Final
Primary References
Document 004010X098A1
SectionAppndx B