OK, here's an odd one for Credit Limits. In NetSuite Account Prefs there is a setting that we have enabled.

Field ID: CUSTCREDLIMORDERS
Check the [Customer Credit Limit Includes Orders] box to include orders that are entered but not yet billed when you make credit limit calculations. This ensures that customers do not place orders over their credit limit.

Note: Unbilled orders are included whether they are approved or not. Closed and cancelled orders are not included in these calculations.

Clear this box to include only billed orders when you make credit limit calculations.

This works as expected in the UI. Issue: In SCA, it doesnt apply. Customer can have credit limit of $3000, and Sales Orders for $2999, but they can just keep adding sales orders (using payment Terms). It is only Invoices that seem to impact SCA Credit Limits. This is odd behaviour. Surely SCA and UI should be the same? Items are serialised and shipped weeks after order (due to manufacturing) so we cannot invoice straight away

I would expect them to have the same behaviour too. If this is happening and you're sure then raise a case

@Steve Goldberg yes, both those are set.