- Entry:
- ONLP
- VIT option:
- HPR
- Event:
- Orphaned NLP
- VIT processing module:
- ISTITCHP
- Control is returned to:
- Module issuing INTRACE
An orphaned NLP is an NLP that appears to have been lost by the DLC.
This trace record is written when an orphaned NLP is detected,
recovered, or freed. There are two types of orphaned NLPs, acknowledged
and unacknowledged. 
- Byte (hex)
- Contents
- 00–03
- Record ID: C"ONLP"
- 04
- ID is the primary address spaced ID (ASID). This field is 0 if the ASID is greater than X'FF'.
- 05
- 0
- 06
- ONLP function:
- A
- Acknowledged orphaned NLP detected
- F
- Free acknowledged orphaned NLP from Garbage_SNDs queue
- R
- Recover unacknowledged orphaned NLP
- S
- Segment recovered NLP
- U
- Unacknowledged orphaned NLP detected
- 07
- Recovery count
- 08–0B
- NLP sequence number
- 0C-0F
- ISTSND address
- 10–13
- Address of INTRACE issuer
- 14–17
- ISTTSCB address
- 18–1B
- ISTRPNCB address
- 1C-1F
- ISTSGMNT address or zeros