Customisation add new print format

Frappe Framework Print Formats
1

Hello…I need to make proforma invoice parallel to sales order…so I can make either sales order or proforma invoice from the quotation. Please help.
(Contents in Both sales order and Proforma invoice should me same…I just need to change the heading)

2

You can edit the heading in the print format editor.

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What I would do is change the {{doc.name}} code to something that makes more sense. Try:
PROFORMA-{{doc.name.split("-")[1]}}

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3

thank you, but i cannot see the sales order in print format.

4

erp

from quote i need to make sales order or proforma invoice, it changes depend on the customer.