How can I apply a journal against an existing customer payment?

AI generated answer (using internal Slack threads):

To apply a journal against an existing customer payment, you would typically create a customer payment transaction to apply all those different transactions to the invoice. This can be done in the UI by clicking the

Accept Payment

button on the invoice and then applying the appropriate credits towards that payment. If you want to automate this process using SuiteScript, you can use the

record.transform

method to mimic the effect of the

Accept Payment

button. Then, use the

Record.setSublistValue

method to mark the same checkboxes you would in the UI. This will usually involve using

Record.findSublistLineWithValue

or

Record.getSublistValue

to find which line you want to mark. However, it's important to note that this process will create a new payment record. If you want to apply a journal entry amount against an invoice without creating a new payment record, there is no native equivalent for this in NetSuite. You would need to create the customer payment to properly record the application of credits. NetSuite might not actually create the customer payment if the credits balance out the payment amount to 0, but it will apply the chosen crediting transactions to your invoice. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******