IBM SC34-6814-04 - Manual (Page 752)

The label header part of the journal control label header is 10 bytes long, and its
format is shown in Figure 91.
JCRLL
2-byte length of record.
X'0000'
2-bytes containing X'0000'.
32
Fixed length
Label prefix Label header
10 4
Length of block
Not presented unless the
caller is reading data blocks
rather than records
Figure 90. Format of journal control label header
Record number
within block
JCRLRN Length of record
JCRLL
2 2 2 2 2
User-type ID
JCRUTRID
System-type ID
JCRSTRID
X‘0000'
'0000' if CICS journal request.
Otherwise code specified in JTYPEID
keyword of user request
‘0000' if user journal request.
Otherwise 1-byte function ID
followed by 1-byte module ID
Fixed length
Figure 91. Format of label header part of journal control label header
730 Customization Guide