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2.25.1 General acknowledgment

LAB acknowledges the message that ADT sent identified as ZZ9380. (LAB and ADT, the sending and receiving system IDs, are site-defined.) Both systems are associated with the same FACILITY, 767543. There is no trigger event for an acknowledgment, so the second component of MSH-9-message type is not present. The component separator may be present there, but need not be. The AA code in the MSA segment indicates that the message was accepted by the application.

MSH|^~\&|LAB|767543|ADT|767543|19900314130405||ACK^|XX3657|P|2.1<CR>
MSA|AA|ZZ9380<CR>

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