Suitescript 2.0 setting coupons and partner codes - rest

Question

We created a suitescript 2.0 script in our netsuite environment. We are using RESTlet to access it.
Our script creates a sales order with various fields. It works fine but we are unable to set a coupon code value or a partner code, we get the same error for both. We are using Internal ID and we tried coupon code itself as well.
Any idea?
Error:
{
"type":"error.SuiteScriptError",
"name":"INVALID_FLD_VALUE",
"message":"You have entered an Invalid Field Value 18 for the following field: couponcode",
"stack":[
"<anonymous>(N/record/recordService.js)",
"setSalesOrderData(adhoc$-1$debugger.user:71)",
"saveSaleOrder(adhoc$-1$debugger.user:17)",
"<anonymous>(adhoc$-1$debugger.user:107)",
"<anonymous>(adhoc$-1$debugger.user:6)"
],
"cause":{
"type":"internal error",
"code":"INVALID_FLD_VALUE",
"details":"You have entered an Invalid Field Value 18 for the following field: couponcode",
"userEvent":null,
"stackTrace":[
"<anonymous>(N/record/recordService.js)",
"setSalesOrderData(adhoc$-1$debugger.user:71)",
"saveSaleOrder(adhoc$-1$debugger.user:17)",
"<anonymous>(adhoc$-1$debugger.user:107)",
"<anonymous>(adhoc$-1$debugger.user:6)"
],
"notifyOff":false},"id":"","notifyOff":false
}
}
RESTlet code:
var objRecord = record.create({
type: record.Type.SALES_ORDER,
isDynamic: true
});
/* add other values.....*/
objRecord.setValue({ fieldId: 'couponcode', value: 538 });
var recordId = objRecord.save({
enableSourcing: false,
ignoreMandatoryFields: false
});

Answer 1

Are these coupon codes you are trying to set One-Time Use codes? Or are they linked to a Promotion?
Which internal ID are you using in the couponcode field?
Can you share the relevant parts of your RESTlet code as well?
I tested the following in the console (i.e. a Client Script) on a Sales Order, and it seems to set a Promotion and Coupon Code appropriately:
require(["N/currentRecord"], function(c) {
c.get().setValue({
"fieldId": "couponcode",
"value": 1
});
});
where 1 is the internal ID of the Promotion. If I use an internal ID not associated to a Promotion, I get no error, but nothing is populated in either field.

Answer 2

we finally got working code from Netsuite support, since there is such little help on this topic online, I am sharing it here. We grabbed what we needed into our own script, but this basic one works as well,
From netsuite support agent:
I created a simple SuiteScript 2.0 code for entering the values into Partner field (id: 'partner') and Coupon Code (id: 'couponcode'). Both fields are dropdown fields not multiselect fields.
The field Coupon Code depends on Promotion field that's why we should enter value in 'promocode' field instead of 'couponcode'.
/**
*#NApiVersion 2.x
*#NScriptType usereventscript
*/
define(['N/record'],
function(record) {
function AfterSubmit(context) {
var result = record.load({
type: 'salesorder',
id: 71040,
isDynamic: true
});
result.setValue ({
fieldId : 'partner',
value : 45140
});
result.setValue ({
fieldId : 'couponcode',
value : 'AMARILLO16'
});
result.save({
enableSourcing : false,
ignoreMandatoryFields : true
});
return true;
}
return {
afterSubmit: AfterSubmit
};
});
We had to do one modification for it to work for us:
result.setValue ({
fieldId : 'partner',
value : 45140
});
result.setText ({
fieldId : 'couponcode',
text : 'AMARILLO16'
});
result.save({
enableSourcing : false,
ignoreMandatoryFields : true
});