Error 1070003ΒΆ

    "errorCode": "1070003",
    "errorDescription": "Cancelshipment already initiated.",
    "additionalInfo": "Refund for transaction already posted!"

This error occurs when a Void Shipment request was already submitted. To obtain a list of refund requests already submitted, issue the Transaction Reports GET operation with the transactionType query parameter set to POSTAGE REFUND. This returns both manual and automatic refunds.

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