https://www.ibm.com/docs/en/connect-direct/6.3.0?topic=gip-ckptmode-record-block-block-record-pds-nopds-nopds-pds-vsam-novsam-vsam-novsam
CKPT.MODE = (RECORD | BLOCK BLOCK | RECORD PDS | NOPDS NOPDS | PDS VSAM | NOVSAM VSAM | NOVSAM)
moderecordblockpdsvsam