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Any guidance on how to set the paymentMethod when creating a salesOrder via REST

I'm able to set it on the UI, I'm also succesfull when creating a salesOrder via SOAP
```&lt;s0:paymentMethod type="paymentMethod" internalId="7"&gt;
&lt;platformCore:name&gt;Amazon&lt;/platformCore:name&gt;
&lt;/s0:paymentMethod&gt;```
but when using REST
```"paymentMethod":{
        "id": 7
    } ```
or
```"paymentMethod": 7```
return the following error (_when setting X-NetSuite-PropertyNameValidation to Error_) "Unknown field name 'paymentMethod'. The field does not exist on this record instance.",

My Issue has been resolved
Based on NetSuite's response I enabled _Payment Instrument_ feature and used `paymentOption` to pass the payment method