Currently the MyDeal.com.au sales channel only supports refunds for full order cancellations prior to fulfilment. Partial refunds and refunds on fulfilled orders are not synced and must be submitted via the MyDeal Seller Portal.
If you need to cancel and refund an order prior to fulfilment:
For example, because the product is unavailable or the customer has had a change of mind, then you can process the cancel order request via Shopify (click here for instructions).
Once submitted MyDeal will automatically process a full refund to the customer and send the customer an email notifying them of the order cancellation. (NOTE: it can take up to 1 business day for refunds to sync).
If you need to process a partial refund or refund after fulfilment:
For example, because the order arrived with some damage, then you must contact the customer or MyDeal directly via the MyDeal Seller Portal to process this type of refund.
If you try to process a partial refund or refund an order after fulfilment via Shopify then you will receive an email from MyDeal notifying you that MyDeal was unable to process the refund. Learn more about submitting refunds here.