The response I received from SuiteIdeas was 'as designed' case closed with no explanation. I am not even sure if they really understood the issue. If it is designed to work this way, then it is quite inconsistent and misleading. Oh well.

Thanks @Leonard Mallare-Oracle for your thorough analysis. It is quite possibly a bug, so I have submitted it to SuiteIdeas

Hi @Richard James Uri-Oracle. I think you have done the best you can to provide an answer. I won't know for sure until I am able to test the beta endpoints for myself. If need be, we can utilize scripts to work around any issues or limitations. Thanks for your assistance.

I created this SuiteScript 2 user event script as a work around. /** *@NApiVersion 2.x *@NScriptType UserEventScript */ define (['N/log'], function(log) { // On invoice create/edit, applies item.taxcode when custom field item.custcol_tax_code_override is present. function beforeSubmit(context) { if (context.type !==…

Hi @Kristoffer Viray-Oracle Thanks for responding. I am using a different role from the standard Administrator role. However, from what I can see the role I am using has all of the same permissions set. A 204 created status is returned - no error. However, the tax details provided are not honoured and instead the default…

Hi @Richard James Uri-Oracle Appreciate your response. Unfortunately, we cannot try the beta endpoints until we have been approved for the program. So, I guess I will have to wait until then. I know the customer payment works with SOAP, but I want to use REST. To your knowledge, are known issues with beta endpoints are…