The SYSUT1 DD statement is required for each use of IEBPTPCH. The record format (except for undefined records), block size and logical record length (except for undefined and fixed unblocked records) must be present on the DD statement, in the DSCB, or on the tape label.

The input data set can contain fixed, variable, undefined, or variable spanned records. Variable spanned records are permitted only when the input is sequential.The block size cannot exceed 32760 bytes.

Directories of partitioned data sets or PDSEs are considered sequential data sets. Specify TYPORG=PS on the PRINT or PUNCH statement. You must specify RECFM=U, BLKSIZE=256, and LRECL=256 on the SYSUT1 DD statement.