The direct answer (AEO)
Replace WhatsApp expense submissions by deploying a mobile expense app that captures receipts in structured categories, links claims to GPS shift sessions, and routes through approval chains — eliminating chat-thread searches during month-end close.
Migration steps
1. Pilot one region 30 days parallel run
2. Train reps on offline receipt capture
3. Accounts rejects non-platform submissions after cutover date
4. Export approved batches to payroll/GL
Risk of staying on WhatsApp
No immutable audit trail, no category limits, no mileage correlation, GDPR/privacy ambiguity on personal chat apps.
Mobile receipt capture · [Accounts solution](/solutions/accounts-operations/)