Triton Student System (TSS) Transition: Impacts on Student Reporting

What is "SIS Data Source"?

It is a required Display Option that tells the report which student information system (ISIS or TSS) the report will pull data from. The option is being added to reports as the TSS data becomes available. 

To view the rollout schedule, please visit Current and Future Report Development.

Visit the Enterprise Systems Renewal (ESR) website to learn more about the Student Information System project.

Why does it exist?

The transition from ISIS to TSS is being rolled out in phases.

• FA26 is the first term where TSS is the official system of record.
• WI26, SP26 and all Summer 2026 terms remain in ISIS.

Because the transition is staggered, the recommended source will change over time. During the implementation period, reports may need to reference both systems.

Once the transition is complete, TSS will contain the most current and complete information for recent students (approximately the last 10 years).

Options & When to Use Them

Information below subject to change.

• System of Record By Term – recommended during the transition

  • Shows ISIS data for WI26, SP26 and all 2026 Summer terms.
  • Shows TSS data for FA26 and all future terms.
  • This option will retire after the transition is fully complete.
    
    

• Prioritize TSS – recommended after the transition

  • Uses TSS data when a student’s academic history is loaded there.
  • Falls back to ISIS only for students without a complete TSS record.
  • Provides the most current information once TSS is the official system of record (FA26+).
    
    

• TSS Only – use when you are comfortable with possible gaps for pre‑FA26 terms.

  • During the cut-over period, records prior to FA26 may be incomplete.
  • Approximately 10 years of students will have been loaded; older data should use “Prioritize TSS.”
    
    

• ISIS Only – legacy option for students not migrated to TSS.

  • No FA26+ data will be available.
  • Useful when student’s record never migrated to TSS.
  • Useful when reviewing historic course versions.
  • Useful when reviewing historic accounts receivable transactions.
  • Not recommended after the transition as data will be stale.
    
    

• Both (duplicates) – comparison view

  • Displays separate rows for the same student form ISIS and TSS.
  • Helpful for side‑by‑side comparison.
    
    

Key Takeaway

• Pre‑FA26 (during transition): System of Record By Term is the safest default.
• FA26 and beyond: Use Prioritize TSS for the most complete and current data across recent history.

Student identification numbers are changing:

• ISIS
  Field name"Legacy Student PID", begin with the letter "A" and are then followed by 8 numbers
  (e.g. A12345678)
  
  
• TSS
  Called "TSS Student Number", begin with the number "2" and are then followed by 8 numbers
  (e.g. 212345678)

Searching or filtering with either Legacy Student PID or with TSS Student Number will find all data related to the student regardless of which system the data comes from.

Quick solution: selecting both the ISIS and TSS options to ensure you are getting all the information you need.

Below is an example of what you will see when searching for incoming Revelle students in the Incoming Students Report:

In addition to Student PID changes, many codes, titles and/or descriptions are changing in TSS. The sections below will help you know which ones to keep an eye out for and help you avoid accidental filtering due to system-specific codes.

Visit the release page to view the specific fields and filters impacted.

• April Retrofit Release