How to use the correctly, Where to populate the field?

var cart = container.getComponent('Cart');
			var data = {
				fieldId: "custbody_test_field",
				type: "string",
				value: "C123456"
			}

			cart.setTransactionBodyField(data).then(function() {
				console.log(data.fieldId + ' was set to ' + data.value);
			}).fail(function(error) {
				console.log('setTransactionBodyField failed.');
			});

Any of the following circumstances will cause this method to fail and return an error: • If there are no transaction body fields on the page. • If the specified transaction body field is not on the page. • If the value of

value

does not match the specified

type

in the TransactionBodyFieldData object. • If the value of

type

in the TransactionBodyFieldData object does not match the field type in NetSuite.

Try it in the checkout. If it works then you've stumbled upon issue 659128

Hello @Steve Goldberg, good day! Is there an existing issue with setTransactionBodyField method? We also stumbled upon an issue on setting a custom Transaction Body Field in Checkout using this method. The customization was made last 2023 and it suddenly stopped working recently. The custom field is configured properly: Displayed in Website, Applied To Sale, Store Value is true. It is also added under Advanced > Custom Fields in SC Configuration. This issue is both occurring on different SCA versions: 2023.2 and 2024.2. Thanks!

The only known issue I have for it is that it will fail when used in the shopping application; it should still work in checkout

Thanks @Steve Goldberg. Will do!