Business Validation ErrorCode 6000 - Unexpected Internal Error. (-30000)
Possible cause of the error:
QuickBooks online has a feature AST (Automated Sales Tax) where the sales tax is determined based on the source and destination address.
Other possibilities could be when you have some special characters in SKU, item name or item has more than the transaction and accounting taking time.
Steps to resolve this error:
1). First, we need to enable AST in QuickBooks online, please refer to this QuickBooks article on how to enable AST.
2). Once AST is enabled, in Webgility Online on the left-hand side panel click on ‘Sync Settings' and navigate to the ‘Sales Tax’ tab.
3). Select the correct Tax code. Select the setting tax code ‘Based on location’ or the user can select any other tax code. Then click on Save.
Refer to the following GIF for the steps.
4). Once configured, re-try posting the order.
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