Tracking and controlling requisites

To track and control elements successfully, all elements and their modifications and updates must be clearly identified to SMP/E. SMP/E relies on modification identifiers to accomplish this. There are three modification identifiers associated with each element:

Function modification identifiers (FMIDs) that identify the function SYSMOD that introduced the element into the system.
Replacement modification identifiers (RMIDs) that identify the last SYSMOD (usually a PTF SYSMOD) to replace the element.
Update modification identifiers (UMIDs) that identify the SYSMODs that have updated an element since it was last replaced.

SMP/E uses these modification identifiers to track all SYSMODs installed on your system. This ensures that they are installed in the proper sequence. Now that we realize the need for element tracking and know the types of things SMP/E tracks, let's look at how SMP/E performs its tracking function.