What is the authorization number on a receipt?

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Tags

1. #appears
2. #debit
3. #digits
4. #seven
5. #numeric
6. #length
7. #credit
8. #transaction
9. #merchant
10. #number
11. #approval
12. #approved
13. #authorization
14. #receipt
15. #printout
16. #reason
17. #usually
18. #referred
19. #alphanumeric
20. #confirms