Hi everyone, Can anyone tell me how to add a custom field to the Inbound Shipment Bill at the line level in NetSuite? Thanks in advance!

Use a user event script before load entry point in combination with Sublist.addField to add your field. These scripted fields will not store value; you will probably want to use the after submit entry point to save your field values into a custom record which you will later use in the before load entry point to source your custom field.

@battk Thanks And which object use to deploy this? attached page which i want to add custom field.

add the field to the inbound shipment first. From there, you will be access it from the vendor bill that is created