eMake displays this message when it is allocated a concurrent build license and able to continue executing the build, after being stalled due to a shortage of concurrent build licenses. This message will have been preceded by warning EC1321.
Warning EC1322 does not indicate a build failure, but it does mean that the build will take longer to complete than normally expected.
This message means that there are more concurrent builds running than your CloudBees Build Acceleration license permits. Excess builds will simply queue until licenses become available.