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dispute_channel
The channel where the customer created the dispute.
Type: string
Match^[A-Z0-9_]+$Length1 <= length <= 255
Allowed values
"INTERNAL"
The customer contacts PayPal to file a dispute with the merchant.
"EXTERNAL"
The customer contacts their card issuer or bank to request a refund.
"ALERT"
Pre-chargeback alert when customer contacts their card issuer to request a refund.