Error on Credit Memo Export
Error Code: MG_CREDIT_MEMO_EXPORT_ERROR
Error Message: 'This transaction is not linked to an existing NetSuite order'
Reason: The credit memo was not transferred from the Order record and thus the 'createdfrom' field on the credit memo is empty.
Make sure that the cash sale is transferred to create a refund so that the 'createdfrom' field is populated with the order id.