Header Fields - Data set header RCCS section

Record Characteristic Change Section (RCCS) has an identifier field of X’00’ and a modifier field of X’40’. Only used on SYSIN data. Not required if all SYSIN data is RECFM F and LRECL 80. When present, it is sent as the only section in the data set header without the “basic” general section and with a modifier of X’00’.

For JES2, POWER, and AS/400 SYSIN. JES3 does not use, send, or store and forward these sections.

Click any of the following fields for more detailed information.


NDHCFLG1

Reserved flag byte.

Length and type: 1 byte

Default value: 0

NDHCRCFM

SYSIN data set's record format. Bit settings and associated record formats are as follows:

11xx xxxx

Undefined format

10xx xxxx

Fixed format

01xx xxxx

Variable format

Default value: 0

NDHCLREC

Maximum record length in the SYSIN data set that follows. AS/400 sets this field but does not use it. RSCS uses this field as a store-and-forward node to determine if a SYSIN file will be stored as coded NOPs (completed when NDHCLREC indicates the record length is not 80). POWER always has an undefined record format. Length, type, and range: 2 binary (0-252)

Default value: 0