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Attempting to script against the SuiteTax native "taxregistration" sublist on Customers:
```customerRecord.setSublistValue({
    sublistId: 'taxregistration',
    fieldId: 'taxregistrationnumber',
    line: 0,
    value: customerToProcess.taxRegNumber
});
customerRecord.setSublistValue({
    sublistId: 'taxregistration',
    fieldId: 'custpage_taxreg_entitydeftaxcode',
    line: 0,
    value: customerToProcess.taxCodeInternalID
});```
The first setSublistValue works fine, but I don't think I can reach the Entity Default Tax Code field. Has anyone ran in to a similar issue?