Enter rate type for validation workOrder in sap WOrkManager

Hello,

During the synchronisation of workOrder (meter Installation), I have an error message:

com.sap.mobile.platform.server.agentry.impl.AgentryServerManager:logConsoleErrorMessage########45906#####Exception: 15:42:14 05/04/2016 : 20 (Agentry3), Java Business Logic Error (com.syclo.agentry.BusinessLogicException: MeterInstallationSteplet - Enter Rate Type

I don't have this issue when I confirm the same workOrder with the same equipment in SAP Backend. I find no rule about this error in MeterInstallationSteplet.

Have you an idea about this issue?

Thank's a lot