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AI generated answer (using internal Slack threads):

To build a report that shows items' opening balance, quantity receipt from return authorization only, quantity sold, and net quantity sold, you can use a combination of NetSuite's built-in reports and saved searches. Here's a step-by-step guide: 1. Opening Balance: You can use the 'Inventory Valuation Summary' report to get the opening balance of your items. You can customize this report to show the balance as of a specific date. 2. Quantity Receipt from Return Authorization Only: For this, you can create a transaction saved search. In the criteria, select 'Type' as 'Return Authorization'. In the results, add 'Quantity'. This will give you the quantity received from return authorizations. 3. Quantity Sold: You can use the 'Sales by Item' report to get the quantity sold. Customize this report to show the quantity sold within your desired date range. 4. Net Quantity Sold: The net quantity sold can be calculated by subtracting the quantity received from return authorizations (step 2) from the quantity sold (step 3). Remember to filter these reports and saved searches by the item to get item-specific data. If you are comfortable with SuiteQL, you can also create a Suitelet to get a more customized report. You can refer to this blog post for more information: https://timdietrich.me/blog/netsuite-inventory-balance-history-suitelet/ ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******