Step-by-step outline
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Insert card
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Enter PIN
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Select deposit
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Select amount
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Put money in envelope
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Receive envelope print transaction id on envelope
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Send deferred transaction
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Print receipt
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Eject card
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The next day open security box
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Count money
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Commit transactions
Is the counting and committing within our system? Is this a part of some other system at the bank? Where is the
boundary?
List of Alternative flows
A1 Wrong PIN
A2 Invalid "to account"
A3 No envelope inserted
A4 Two envelopes inserted (or more)
A5 No money in envelope
A6 Too much money in envelope
A7 Envelopes missing
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