A channel reservation error occurs when two separate Telestra servers are trying to reserve, or use, the same channel on the ACENet device. By rule, the first Telestra server to install a project that contains that ACENet channel component will exclusively reserve the channel and block all other Telestra servers from using it. So, you would need to uninstall or stop the project on the first Telestra server in order for another Telestra server to gain access to that ACENet channel.