To access these files, visit our Sage Knowledgebase Site HERE, scroll down to locate the Download Sage X3 Version 2025 R1 (12.0.37), then look for Download Sage X3 Polish e-Invoicing KSef for 2025R1 (12.0.37). Once you select the download option, you will be prompted to login to your Sage Portal Account.

For a complete list of available Sage X3 full-product downloads and patch updates, see the Sage X3 Download Portal. 

WARNING: If you use third-party products that integrate with Sage X3 or ISVs, check with the vendor of your third-party product to ensure their product is fully compatible with this release. If you integrate with other Sage products, check with your business partner or Sage to ensure that these components are compatible