When importing a custom list/record field on a custom record that references a stock accounting segment, I am unable to reference the stock segment by External ID.

AI generated answer (using internal Slack threads):

Based on the conversations, it appears that using external IDs as the value of select fields within NetSuite, especially for custom List/Record fields, is not supported. You might have to look up the internal ID of the record that the external ID references, and store its Internal ID in the field. This is because without record reference keys (name, internal or external ID), it would be impossible to associate your updates to the record. Reference keys are the linchpin of any database, including NetSuite. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******