Environmental Recording, Editing, and Printing (EREP) program is a diagnostic application program that runs under MVS, VM, and VSE. It generates and prints reports from error recording data set (ERDS) records. With these reports, IBM service representatives can determine the existence, nature, and location of a problem.

EREP reports display the encryption-capable TS1120 tape drive as "3592-E05". For examples of EREP reports showing this model type, see EREP modifications for 3592 Model E05.