When this guide is useful
This fictional case concerns one purchase recorded through several payment systems.
The distinction that matters
The learning objective is tracing one underlying expenditure. A reimbursement, imported card line and vendor invoice should be connected before a reviewer evaluates the expense.
A worked situation to investigate
A fictional consultant requests reimbursement for a software bill that a bookkeeper already recorded from a personal card statement.
The example is illustrative. Begin with the underlying event and its source documents, then separate missing facts from disagreements about their treatment. Work through the checks below in the order that matches your file, rather than treating a completed checklist as a tax conclusion.
Build a traceable handoff
Identify the affected person, entity or property and the relevant period. Keep original evidence, corrections and the reviewer's written conclusion connected. If the facts change after review, preserve the earlier version and ask whether the change affects implementation.