why do I get this error "You cannot delete the end of group line. You must delete the group" in normal, non-dynamic mode-loaded Opportunity if I remove all the lines and then add one Item Group before saving the Opportunity, in Suitescript?

AI generated answer (using internal Slack threads):

The error "You cannot delete the end of group line. You must delete the group" typically occurs when there is a script or workflow running on the record that is trying to modify the 'End of Group' line of an Item Group. In NetSuite, an Item Group has a start line and an end line, and these lines cannot be edited or deleted individually. They must be manipulated as a whole group. When you remove all the lines and then add an Item Group in a non-dynamic mode-loaded Opportunity, the script or workflow might be trying to modify the 'End of Group' line, which is not allowed. To resolve this issue, you need to adjust your script or workflow to exclude the 'End of Group' line. If you are using a workflow, you can add a condition to the Sublist action group to exclude the 'End of Group' line. If you are using a script, you can add a condition to check if the line item is 'End of Group' before performing any operations. For example, in SuiteScript, you might use a condition like this:

javascript
if (lineItem != 'End of Group') {
  // perform operations
}

In a workflow, you can use a Custom Formula condition with a similar logic:

javascript
{line.item} != 'End of Group'

Remember to replace 'line.item' with the actual field id that holds the line item name in your record. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******