System reference codes (SRCs) are a sequence of data words (codes) that can help identify system status, describe a failure (for example, hardware, Licensed Internal Code (LIC), or software), and identify the failing unit and its location.
SRCs can display on the control panel, appear in a system console message, or appear in the product activity log. For details, see Product Activity Log. For details on how SRC information displays on the control panel, see SRC formats.
In summary, the SRC provides the first-failure-data-capture information. The customer or support representative uses SRCs during problem determination, repair actions, and verification. The SRC provides a link to the problem determination procedures (hardcopy or softcopy). Use the SRC and the problem determination procedures to isolate the problem.