You can use a custom view to filter records that have an empty value in a specific field. Let’s understand this better with the help of a scenario.
Scenario: Patricia, a purchasing manager, manages material orders for production at her manufacturing company. Upon receiving a raw material request from production, she creates a purchase order in Zoho Books, which she sends to the vendor. The vendor fulfills the order and returns an invoice, occasionally without the order number, which Patricia records as a bill. To identify such bills, Patrcia creates a custom view with the condition “Order Number is empty” in the Bills module. She then adds the Order Number to those invoices.
To create a custom view to filter records that have an empty value:
A custom view will be created which displays records with empty values (in this case, bills not having an order number).
and GST filing.