You would need a third party importer, check the app store

https://apps.intuit.com/

this is one many folks use
http://www.baystateconsulting.com/products/01TxnWizardOE.htm

Resolution for 'upload sales issue: 'How can i upload sales and purchases from Excel' available: Yes.

The upload sales issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the upload sales issue yourself by looking for a resolution described in the article. If it is a complex upload sales issue or you are unable to solve the issue, you may contact us by clicking here or by using other upload sales support options.

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