To Add the purchase order number please follow the below mentioned steps
Step 1 – Kindly go to sales section >> Click on invoices >> Click on create invoices
Step 2 – Kindly click on Custom Headers
Step 3 – Click on (+ PO Number)
Step 4 – Please note that the toggle button for both i.e. (show in PDF and Active) should be enabled.
Turn on required toggle to make it as required custom field while creating Invoice.
Step 5 – There you will get an option to add the PO Number.
