IEBUPDTE (Update Data Set) Program

You can use IEBUPDTE to create or modify sequential or partitioned data sets or PDSEs. However, the program can be used only with data sets containing fixed-length records of no more than 80 bytes. (It is used primarily for updating procedure, source, and macro libraries, such as those containing JCL.)

You can use IEBUPDTE to perform these tasks:

Incorporate IBM or your source language modifications into sequential or partitioned data sets, or PDSEs.
Create and update data set libraries.
Modify existing sequential data sets or members of partitioned data sets or PDSEs.
Change the organization of a data set from sequential to partitioned or PDSE, or the reverse.

You can also use your own exit routines to process header and trailer labels.