Considerations and limitations for Geronimo servers
There are some different considerations between developing, testing, and running HATS web applications on Apache Geronimo server versus WebSphere® Application Server. For example, only one HATS web application is supported per .ear file running on an Apache Geronimo server.
For up-to-date support considerations, see "Host Access Transformation Services 9.7 - Known issues and workarounds" at https://www.ibm.com/support/pages/node/876092.