The XSD for the Infinispan subsystem (jboss-as-infinispan_4_0.xsd) says the following about <transaction mode="...">:

Sets the cache transaction mode to one of NONE, NON_XA, NON_DURABLE_XA, FULL_XA.

However, the enum org.jboss.as.clustering.infinispan.subsystem.TransactionMode has the following values:

• NONE
• BATCH
• NON_XA
• NON_DURABLE_XA
• FULL_XA

I.e., the BATCH value is missing from the documentation. Interestingly, BATCH is also used in the default config for all the web and ejb caches.