Find the process that should have applied
Compare the relevant regulations, assessment brief or published procedure with what occurred. An irregularity might involve a missing procedural step, a failure to consider material evidence or an error in applying a published rule.
Explain the consequence
Describe the practical effect on your ability to participate or on the decision. A minor departure with no apparent effect may be less persuasive than a clear error that could have changed the outcome.
Present the point clearly
Use a short timeline and cite the specific rule, decision and documents. Distinguish the procedural issue from a disagreement with academic judgment. Ask for a remedy that addresses the identified problem, such as a fresh consideration under the correct procedure.