Error: Posting and non-posting discounts/markups are not allowed on the same transaction?

AI generated answer (using internal Slack threads):

The error message "*Failed to save record because Posting and non-posting discounts/markups are not allowed on the same transaction*" is indicating that you are trying to apply both posting and non-posting discounts/markups on the same transaction, which is not supported in NetSuite. In NetSuite, a posting discount/markup is one that affects the General Ledger (GL) directly, while a non-posting discount/markup does not affect the GL. When you create a discount item, you can choose whether it is posting or non-posting. Once a discount item is used in a transaction, you cannot change its type from posting to non-posting or vice versa. If you want to apply multiple discounts to a transaction, they all need to be of the same type, either all posting or all non-posting. If you have a discount item that is set as posting and you want to use it in a transaction with non-posting discounts, you would need to create a new non-posting discount item. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******