How to Manage Shipping Cost Recalculation in NetSuite Web Services?

To prevent the automatic recalculation of altshippingcost when updating item quantities or other relevant fields via NetSuite web services, the existing altshippingcost value must be explicitly resubmitted with the transaction. If the NetSuite account is configured to automatically charge for shipping, the altshippingcost will default to the value corresponding to the selected shipping method upon recalculation.

The following SuiteScript 1.0 example demonstrates how to explicitly set the shippingcost field to its current value to prevent recalculation. While this snippet uses legacy SuiteScript 1.0 functions, the underlying principle of explicitly setting the shipping cost remains relevant. For new development, it is recommended to use SuiteScript 2.x equivalent methods.

nlapiCommitLineItem('item');
// to prevent the recalc of shipping cost from the webservices
var shippingcost  nlapiGetFieldValue('shippingcost');
nlapiSetFieldValue('shippingcost',shippingcost);