From FIXwiki

ApplReportType Value 2

Value	Name	Field(tag)	First introduced	Deprecated
2	ApplicationAlive	ApplReportType(1426)	FIX.5.0

Heartbeat message indicating that Application identified by RefApplID(1355) is still alive. Refer to RefApplLastSeqNum(1357) for the application sequence number of the previous message.

Notes

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