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In the SCAs folder you will find the files that must be installed on the Java EE machine. For this process, follow the following link: 1.2.4. SCA Deployment of the SCAs
TPZ files are files that you will need to import into the SAP PI / PO Enterprise Service Repository tool. You can find more information on how to proceed with the import and configuration of the tpz content by following this link: 2.8.3. Software installationSW Installation