Failed payment recovery workflow with smart retry scheduling, dunning email sequence, payment method update prompts, and involuntary churn prevention.

Full FlowZap Code

PaymentGateway { # Payment Gateway
n1: circle label:"Start"
n2: rectangle label:"Receive payment request"
n3: diamond label:"Card valid?"
n4: rectangle label:"Attempt charge"
n5: diamond label:"Charge successful?"
n6: rectangle label:"Return success response"
n7: rectangle label:"Log failure reason"
n1.handle(right) -> n2.handle(left)
n2.handle(right) -> n3.handle(left)
n3.handle(right) -> n4.handle(left) [label="Yes"]
n3.handle(bottom) -> n7.handle(top) [label="No - Invalid"]
n4.handle(right) -> n5.handle(left)
n5.handle(right) -> n6.handle(left) [label="Yes"]
n5.handle(bottom) -> RetryEngine.n8.handle(top) [label="No - Declined"]
n6.handle(bottom) -> App.n15.handle(top) [label="Confirmed"]
n7.handle(bottom) -> App.n16.handle(top) [label="Card error"]
}
RetryEngine { # Retry Engine
n8: diamond label:"Retries remaining?"
n9: rectangle label:"Wait with exponential backoff"
n10: rectangle label:"Retry payment"
n11: rectangle label:"Mark as failed"
n8.handle(right) -> n9.handle(left) [label="Yes"]
n8.handle(bottom) -> n11.handle(top) [label="No"]
n9.handle(right) -> n10.handle(left)
n10.handle(top) -> PaymentGateway.n4.handle(bottom) [label="Retry"]
n11.handle(bottom) -> App.n16.handle(top) [label="Max retries"]
loop [retry up to 3 times] n8 n9 n10
}
App { # Application
n12: rectangle label:"Update order status"
n13: rectangle label:"Send confirmation email"
n14: circle label:"End"
n15: rectangle label:"Mark payment complete"
n16: rectangle label:"Notify customer of failure"
n17: rectangle label:"Offer alternative payment"
n15.handle(right) -> n12.handle(left)
n12.handle(right) -> n13.handle(left)
n13.handle(right) -> n14.handle(left)
n16.handle(right) -> n17.handle(left)
n17.handle(right) -> n14.handle(top)
}

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