I am using Rest web services using netsuite standard API, how can i update value on Multi-select field population ?

AI generated answer (using internal Slack threads):

To update a multi-select field using NetSuite's standard REST API, you can use the

record.submitFields

method. This method should work server-side. However, it might not work in the console for multi-select fields. Here is a sample code snippet:

javascript
var recordId = record.submitFields({
    type: record.Type.SALES_ORDER,
    id: '123',
    values: {
        'custbody_multi_select_field': ['1', '2', '3'] // array of internal ids
    },
    options: {
        enableSourcing: false,
        ignoreMandatoryFields : true
    }
});

In this example, 'custbody_multi_select_field' is the internal id of your multi-select field and ['1', '2', '3'] is an array of the internal ids of the options you want to select. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******