Protocol version mismatch

Error message: Could not connect to manager. Cause: Protocol version mismatch.

Figure 1. Protocol version mismatch

This error occurs when the LaMa adapter is incompatible with the VLA server. This may happen either after deploying a new VLA appliance and installing the adapter from the appliance, whereas IP address of an old appliance is mistakenly specified instead of the new one. Another reason could be that after deploying a new VLA appliance the installation of new adapter from the appliance had been forgotten. To fix this issue you need to upgrade /deploy the VLA server correspondingly.