- Byte (hex)
- Contents
- 00–03
- Record ID: C"IUTR" for IUTIL-R call
- 04
- ID is the primary address space ID (ASID). This field is 0 if the ASID is greater than X'FF'.
- 05
- X'00'
- 06–07
- The low-order 2 bytes of the IUTIL Status field
- 08–0B
- Provider ID (TOKEN)
- 0C–0F
- RUNCB address
- 10–17
- Container address (PSAC)
- 18–1B
- Caller of utility routine
- 1C–1F
- Request parameter header (RPH) address