You can display order tags on your invoices by following the simple steps below.
Since your store can have up to 250 tags (unlimited if you have a shop on the Plus plan), you need to create a support ticket with an example order number with specific tags you wish us to print on your invoices.
Also, if you wish to display your product tags, please click here to get more information.
Step 1: Open Simple Invoice from your Shopify store’s “Apps” section.
Step 2: Click on “Support” on the Simple Invoice dashboard, add your message such as where you want us to print in your invoices, add an example order number that has that order tags used, and click the Send button or simply click here.