IBM SC34-6814-04 - Manual (Page 760)

Journal records written to SMF can be read offline by user-written programs. Such
programs can map journal records by including an INCLUDE DFHLGMSD
statement. This generates the assembler version of the DSECT.
The SMF block header
This block describes the system creating the output. Its format is shown in
Figure 100 on page 739.
CICS
Product
section CICS
Data
section SMF
Block
header
Record
header
LG
Caller
data
Log block Log block Log block Log block
Figure 99. Layout of a CICS log written to MVS SMF
738 Customization Guide