As discuseed on mailing list:
From Pete Muir:

On 7 Feb 2012, at 14:22, Sanne Grinovero wrote:

> I'm having the transactions API defined by both the following packages:
>
> Hibernate core depends on:
>
> <parent>
> <groupId>org.jboss.spec</groupId>
> <artifactId>jboss-specs-parent</artifactId>
> <version>1.0.0.Beta2</version>
> </parent>
> <groupId>org.jboss.spec.javax.transaction</groupId>
> <artifactId>jboss-transaction-api_1.1_spec</artifactId>
> <version>1.0.0.Final</version>

This is the new (correct) location.

>
> Infinispan core depends on:
>
> <parent>
> <groupId>org.jboss.javaee</groupId>
> <artifactId>jboss-javaee-parent</artifactId>
> <version>5.2.0.Beta1</version>
> </parent>
> <groupId>org.jboss.javaee</groupId>
> <artifactId>jboss-transaction-api</artifactId>
> <version>1.0.1.GA</version>
>
> I'd like to introduce some consistency, especially since some project use both.
> Which one should we use ?

This is way out of date.

>
> AS 7.1 [master]
> is using
> <dependency>
> <groupId>org.jboss.spec.javax.transaction</groupId>
> <artifactId>jboss-transaction-api_1.1_spec</artifactId>
> <version>1.0.0.Final</version>
> </dependency>
>
> So I guess Infinispan should pick the same?