> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.openfiskal.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Where can I find the Shopify TSE serial number?

Please contact us at any time at [help@openfiskal.com](mailto:help@openfiskal.com) and we will be happy to help you read the TSE serial number.

Simply send us a picture of a printed sales receipt from one of your Shopify POS cash registers. If you use multiple cash registers, please send one picture per cash register. We will then read the TSE serial number from the QR code and send it to you.