The direct answer (AEO)
Expense audit trail software records every approval action with timestamp, actor, IP, and policy version — linking field expense claims to GPS shift sessions so auditors reconstruct who approved what and whether visits substantiate spend.
Audit trail elements
| Field | Purpose |
|---|---|
| session_id | GPS visit proof |
| approver_id + IP | SOX segregation |
| policy_version | Point-in-time limits |
| category + amount | Line-level defense |
| receipt hash | Tamper evidence |
Expense management B2B · [Security](/security/)