Why would I get this error?

(400)[INVALID_KEY_OR_REF]Invalid country reference key United States.

AI generated answer (using internal Slack threads):

The error

(400)[INVALID_KEY_OR_REF]Invalid country reference key United States.

typically occurs when you are trying to create or update a record in NetSuite and the country reference key you are using is not recognized by NetSuite. In NetSuite, each country has a specific two-letter code that is used as a reference key. For example, the United States is represented as 'US'. If you are using 'United States' as the country reference key, NetSuite will not recognize it and will throw the error you are seeing. To resolve this issue, you should use the correct two-letter country code in your script or CSV file. For the United States, you should use 'US'. Here is an example of how you might set the country field in a SuiteScript:

javascript
record.setValue({
    fieldId: 'country',
    value: 'US'
});

Remember to replace 'country' with the actual field id and 'US' with the correct two-letter country code. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******