The error is fired when attempting to call a transaction-enabled EJB method, from a seam component. Specifically the authentication component.
In order to get to this position, the project's deployment descriptors had to be migrated. Furthermore, mojarra version 1.2_15 was deployed to WildFly, as described by this link: https://community.jboss.org/wiki/DesignOfWildFlyMulti-JSFFeature
Please see attached logs and descriptors.