You cannot perform a bulk merge operation with an empty group.

AI generated answer (using internal Slack threads):

Based on the conversations, it seems that you are trying to perform operations on a group in NetSuite. However, it's important to note that you cannot perform a bulk merge operation with an empty group. If you are dealing with a dynamic group, make sure that the rule Opt-In is marked. This is because the members have to be opted in to receive emails in order to show for the dynamic group. You can do a mass update to Opt In. If you are dealing with a static group, you can create lines in the Members sublist during the time that you are creating the record, but you cannot modify the sublist during updates. This behavior differs from the UI, which does allow manual updates after the record is created. A possible workaround is to use a dynamic group with members hardcoded into the search criteria and then edit the saved search in script. Please note that adding members in a static customer group using SuiteScript is not directly supported as per the NetSuite documentation. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******