Magento Open Source, 1.9.x

Magento 1.x Security Patch Notice
For Magento Open Source 1.5 to 1.9, Magento is providing software security patches through June 2020 to ensure those sites remain secure and compliant. Visit our information page for more details about our software maintenance policy and other considerations for your business.

Add Reference IDs to Header

The order ID and customer IP address can be included in the header of sales documents that accompany an order. Follow the instructions below to include either, or both of these identifiers for reference in the header of invoices, shipment packing slips, and credit memos.