PURPOSE Duplicate submissions create delays, corrections, and possible compliance issues. CHECK FIRST Review previous reports, card transactions, reimbursements, and pending submissions before entering an expense. WATCH FOR DUPLICATES Be careful with expenses paid by company card, reimbursed personally, or included in travel bundles. MATCH RECEIPTS Use receipt date, vendor, amount, and payment method to confirm uniqueness. BEST PRACTICE When unsure, add a note explaining the situation rather than submitting twice.