This error is generated within a unique circumstance:
- The flow was developed for an earlier NetSuite bundle that had the Address subrecord set by default.
- This Address as a subrecord default import setting was later removed in a bundle update.
- The sandbox or production environment’s bundle was upgraded to the latest version.
With the current bundle release, that missing Address subrecord then throws an error.
To re-enable Address subrecord and fix this error, hardcode the Use Address Subrecord to True in the import mappings.