I have a Purchase Order that has an item on it. I then added the item to an existing sales order. How do I tie the PO to the item on the sales order?

AI generated answer (using internal Slack threads):

****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ****** To tie a Purchase Order (PO) to an item on an existing Sales Order (SO), you can use a custom field that is a list/record field where the record type is a transaction. You can add this custom field to the PO or SO (or both) and then assign the SO or PO in that field. This will create a link between the two. If you have already created the PO and SO separately and want to link them, you can do so by exporting the SOs created, using vlookup on externalid to SOId on your template to get the internal id created, then doing the vlookup of SOId on your Purchase template to get the internalid of the SO related to the PO. Then, import this to create the POs. If you want to link the POs to the SOs, do the same and update the SOs using the same file. Please note that this process assumes you have the necessary permissions to create and modify custom fields and transactions in NetSuite.

I don't want to use a custom field but want the link to display in the CREATE PO filed that is already on the line, like I hit the drop ship or special order links that are displaying there now.