QuickBooks Sync Errors

Here are possible Sync errors while exporting Markate data to QBO with their solutions:

ERROR 1: "This Markate estimate contains items with different tax rates. QuickBooks allows to set only one tax rate on estimate." 

How to fix: Edit Estimate and Set the Tax Rate exactly same as the Custom Tax Rate in your QBO account.

ERROR 2: "Could not find QuickBooks Customer."

How to fix: Go to your Markate Account and activate the Customer which is selected in the Estimate. 

ERROR 3: Duplicate Document Number Error. Duplicate Document Number Error : You must specify a different number. This number has already been used. DocNumber=20 is assigned to TxnType=Estimate with TxnId=44

How to fix: It is due to duplicate Estimate Id. You need to remove one of the duplicate Estimates so that there is no duplicity. 

ERROR 4: "Feature Not Supported Error. Feature Not Supported Error : We're sorry. This feature is not included in your QuickBooks Online Essentials subscription."

How to fix: If Billable is check marked, unmark it, save it and syn it again. Billable feature is not supported in QBO.

ERROR 5: "A business validation error has occurred while processing your request. Business Validation Error: Select a customer for each billable split line."

How to fix: When Customer dropdown is left empty, this error occurred. For that, select a customer and sync it again.

ERROR 6: "Could not add a new QB Item named Materials that was set on item #1. QB Account of type Sales of Product Income not found."

ERROR 7: "Could not add a new QB Item named Products that was set on item #2. QB Account of type Sales of Product Income not found."

How to fix Error 6 and 7: Edit Invoice or Estimate, select Type as "Service". "Material" and "Product" types are not supported in QBO.

ERROR 8: "A business validation error has occurred while processing your request. Business Validation Error: Add a line item to continue."

How to fix: In an Estimate or an Invoice, when line items are left empty, this error occurred. Edit and add atleast one line item. Save it and sync again.

ERROR 9: QB Invoice for this payment not found. 

How to fix: This error occurs due to Tax mismatch or a Feature mismatch or duplicity of Invoice ID.