How to Generate X12 999

Generate X12 999 with the HTTP POST Method

You can generate an X12 999 acknowledgment for an X12Interchange by using the HTTP POST method. The request body must be an X12Interchange. Execute HTTP POST to the resource URL, with the request included as application/json content and the query parameter ack to equal 999.

  1. URL:
  2. Request: X12Interchange
  3. Response: X12Interchange

The response will contain an X12Interchange, encoded in application/json format, which represent the 999 acknowledgments with the original ISA and GS, where the sender and receiver had been swapped and the ISA reference number (ISA13) had been set to 1. By default all functional acknowledgments will be batched in the same interchange and TA1 will be included as per ISA14 flag.

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