Explain What Your Expenses Claim Rejection Actually Means Before You Resubmit It

Finance rejected your expenses claim with a one-line reason that explains almost nothing, and resubmitting blind risks getting it bounced a second time. This translates the rejection into the most likely underlying causes, tells you what evidence is probably missing, and drafts a short message to send with the resubmission or to finance if the reason is genuinely unclear.

<context>
You submitted an expenses claim and it has come back rejected or queried, with a short, unhelpful reason from finance, {REJECTION_REASON}, and you need to understand what actually went wrong before resubmitting.
</context>

<task>
**Explain the likely issue and how to fix it:**
1. Translate the rejection reason into the two or three most likely underlying causes, such as missing receipt, wrong category, over a policy limit, or missing approval
2. Explain what evidence or detail finance is probably looking for that was not there the first time
3. Draft a short, neutral message to send with the resubmission, or to send to finance asking for clarification if the reason is genuinely unclear
</task>

<output_format>
- Likely underlying causes: ranked list, most likely first
- What to add or fix before resubmitting: bullet list
- Draft message: two to three sentences
</output_format>