The "invalid configuration: Company ID invalid" error when trying to download a application to a Panelmate is caused due to a software incompatibility between the Panelmate and the Panelmate Configuration software being used. Modicon Plus series Panelmates are only compatible with Modicon Panelmate software. IDT EATON Power series Panelmates are only compatible with IDT Eaton software. If a user attempts to mismatch the software to the hardware, this error occurs. The Company ID is displayed on the system page which is accessible in a Panelmate while in Off-Line mode.