System Variable 74: Client Account Number on Invoice Is Required
Use this System Variable to determine if the Client Account Number should be required on Sales Invoices before the invoice can be approved.
This System Variable is disabled by default. When it is enabled, the Client Account Number should be entered before the Sales Invoice can be approved. If it is not enabled and you try to approve a Sales Invoice with no Client Account Number, you will be prompted with the following error message:
Client account number must contain a value (controlled by system variable 74).
You can find the Client Account Number field on the Header tab in .