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AI generated answer (using internal Slack threads):

The error "Invalid taxcode reference key AVATAX for subsidiary xx" typically occurs when the tax code you're trying to use is not available or not active for the subsidiary you're working with. Here are a few things you can check: 1. Ensure the tax code is active: In NetSuite, go to Lists > Tax > Tax Items. Search for the tax code and ensure it's active. 2. Check the tax code's availability: Edit the tax code and under the 'Available On' field, check if it's currently set as 'Sales Transactions'. If not, you may need to select it. 3. Check the tax code's association with the subsidiary: The tax code must be associated with the correct subsidiary. You can check this by editing the tax code and looking at the 'Subsidiaries' sublist. 4. Check your CSV or request: If you're importing a CSV or making a request, ensure that the tax code is correctly referenced. You might need to use the internal ID or the exact name of the tax code. Remember, if you're using a special character in the tax code name, you might need to replace it with its equivalent word. For example, replace "§" with "paragraph". ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******