If the data is already formatted in the expected XML structure, you can create any source connection that reads an XML file as a source, such as a flat file connection or an SFTP connection to a remote server.

If the data is in relational format, create a source connection that reads a relational source. In this case, you also need to create a mapping that uses a Hierarchy Builder transformation to map the relational data to the XML structure that the serializer data service requires.