why the credit amount of an invoice in gl matching is different from the amount in the item view ?

AI generated answer (using internal Slack threads):

The difference in the credit amount of an invoice in GL matching and the amount in the item view can be due to several reasons: 1. Different Items Used: If a credit memo is created separately from the invoice and applied to it, a different item might be used for the credit memo. This item could post to a different account, causing a discrepancy between the GL matching and the item view. 2. Discounts: If a discount is applied at the time of invoice generation, it can cause a difference in the credit amount in the GL matching and the item view. The discount is applied to the invoice, not the items, which can cause a discrepancy. 3. Manual Adjustments: If a credit note is created with a zero quantity for an overcharged item and the amount is manually adjusted, it can cause a discrepancy. This is because the system will warn that the amount doesn't equal the rate times quantity, but this warning is ignored. 4. Costing Method: The costing method used can also cause a discrepancy. For example, if the average costing method is used, the cost of goods sold (COGS) on the item fulfillment can be different from the sales amount on the invoice, causing a difference in the credit amount in the GL matching and the item view. Remember, these are just possible reasons and the actual cause can vary based on the specific circumstances and settings in your NetSuite account. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******