Credit check

Hi,

We are going to have credit check - Allowed credit limit to customer is ZERO & terms of payment is Advance payment.

Scenario is we are having delivery relevant invoicing and order relevant invoicing.

Delivery relevant invoicing is working fine where as order relevant invoicing with service item TAD is not carrying out credit check if order value is exceeding the allowed credit limit if we implement automatic credit check.

Please anyone let me know the reason why & how to come across this or any note is available?

Thanks and Regards,]

Sp.Balaji