Actually, I don't have that JP Morgan bank specification document to understand and map required fields to develop that payment file.

AI generated answer (using internal Slack threads):

Based on the conversations, it seems like you are trying to generate a bank payment file in NetSuite. If you are using a common format like CCD/PPD (which is ACH), NetSuite already has built-in support for that, so you don't need to script it. However, if you need to modify the file for your particular bank or want to include specific details (like applied to transaction, specific reference types, other NetSuite fields) in the payment transmission, you would need to modify the payment templates. These modifications are only possible with the advance. If the bank format you need is not listed in the NetSuite EFT documentation, you will need to create your own. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******