What is transaction reference number in banking?

Related questions

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4. Does a reference angle have to be positive?
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8. How long is a reference number?
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Tags

1. #monthly
2. #using
3. #cardholder
4. #including
5. #debit
6. #number
7. #customer
8. #those
9. #identifier
10. #statement
11. #transaction
12. #financial
13. #unique
14. #reference
15. #included
16. #credit
17. #numbers
18. #usually
19. #account
20. #assigned