This report is produced at the completion of APPLY and ACCEPT processing to summarize which SYSMODs were regressed. Regression occurs when SMP/E installs an element from a SYSMOD that did not express a proper PRE or SUP relationship with the RMID and UMID values in the element entry. Regression can occur only when BYPASS(ID) is used to ignore such errors. It does not occur when a new function is being installed, because elements from a function are selected on the basis of functional superiority. SMP/E assumes that service (PTFs and USERMODs) installed on the functionally inferior elements provides ++IF conditional requisite data to ensure that the PTF or USERMOD is at the proper service level.

If no regressions are detected, this report is generally not produced. In certain cases, however, SMP/E detects a regression that is later resolved by other SYSMODs being processed by the same APPLY or ACCEPT command. In this case, the regression report is produced but contains just one message: NO SYSMODS REGRESSED.