Date arguments in PIF applications

You might have PIF applications developed before year 2000 that use 991231 as the value of the VALTO argument to indicate the default valid-to date of the last version of the AD. The real default date is 31 December 2071. However, by using the PIFHD parameter of the INTFOPTS statement or the HIGHDATE parameter of the INIT statement to define the high date as 991231, you can use these existing PIF applications without updating them.

A good way to avoid specifying a specific date for default valid-to dates is to define the PIFHD keyword of the INTFOPTS statement or the HIGHDATE keyword of the INIT statement as a six-character string. HCL Workload Automation for Z will always interpret this as representing the default valid-to date.

Comparison of Date Representations gives an overview of the different date representations.