Short answer: We need a complete receipt that shows the merchant, purchase date, items, and proof of payment.
What this means
The document you sent cannot be used as proof of purchase.
Common examples
Shopping cart screenshots without payment
Order emails that do not show payment completed
Partial or incomplete receipts
Shipping updates
How to fix it
Upload a full receipt that shows the merchant name, purchase date, itemized list, and proof that you paid.
Related
See all reimbursement denial reasons [here].