This page lists the enumerated types used throughout the SolarUser OCPP API.

When a charge session (transaction) stops, the charger can report a reason why. The possible reasons are listed here:

Value	Description
DeAuthorized	The transaction was stopped because of the authorization status in a start transaction.
EVDisconnected	The disconnecting of a cable, or vehicle moved away from inductive charge unit.
EmergencyStop	Emergency stop button was used.
HardReset	A hard reset command was received.
Local	Stopped locally on request of the user at the Charge Point. This is a regular termination of a transaction. Examples: presenting an RFID tag, pressing a button to stop.
Other	Any other reason.
PowerLoss	Complete loss of power.
Reboot	A locally initiated reset/reboot occurred (for instance watchdog kicked in).
Remote	Stopped remotely on request of the user. This is a regular termination of a transaction. Examples: termination using a smartphone app, exceeding a (non local) prepaid credit.
SoftReset	A soft reset command was received.
Unknown	Unknown reason.
UnlockCommand	An unlock connector command was received.

Chargers report an error code value for connectors, which can be one of the following:

Value	Description
ConnectorLockFailure	Failure to lock or unlock the connector.
EVCommunicationError	Communication failure with the vehicle, might be Mode 3 or other communication protocol problem.
GroundFailure	Ground fault circuit interrupter has been activated.
HighTemperature	Temperature inside Charge Point is too high.
InternalError	Error in internal hard- or software component.
LocalListConflict	The authorization information received from the Central System is in conflict with the charger- local authorization list.
Mode3Error	EV communication error, replaced by EVCommunicationError in later OCPP specifications.
NoError	No error to report.
OtherError	Other type of error.
OverCurrentFailure	Over current protection device has tripped.
OverVoltage	Voltage has risen above an acceptable level.
PowerMeterFailure	Failure to read electrical/energy/power meter.
PowerSwitchFailure	Failure to control power switch.
ReaderFailure	Failure with idTag reader.
ResetFailure	Unable to perform a reset.
UnderVoltage	Voltage has dropped below an acceptable level.
WeakSignal	Wireless communication device reports a weak signal.

Chargers report a status value for connectors, which can be one of the following:

Value	Description
Available	The connector is available for a new user.
Occupied	Replaced by Charging in later OCPP specifications.
Faulted	When a Charge Point or connector has reported an error and is not available for energy delivery.
Unavailable	When a connector becomes unavailable as the result of a ChangeAvailability action or an event upon which the Charge Point transitions to unavailable at its discretion.
Reserved	When a connector becomes reserved as a result of a ReserveNow action.
Preparing	When a connector becomes no longer available for a new user but there is no ongoing charging session (yet). Typically a connector is in this state when a user presents an authorization (e.g. RFID card), inserts a cable or a vehicle occupies the parking bay.
Charging	When the contactor of a connector closes, allowing the vehicle to charge.
SuspendedEV	When the EV is connected to the charger and the charger is offering energy but the EV is not taking any energy.
SuspendedEVSE	When the EV is connected to the charger but the charger is not offering energy to the EV, e.g. due to a smart charging restriction, local supply power constraints, or as the result of StartTransaction action indicating that charging is not allowed.
Finishing	When a charging session has stopped, but the connector is not yet available for a new user, e.g. the cable has not been removed or the vehicle has not left the parking bay.

The metering data captured by chargers includes a location qualifier that specifies where the measurement was captured from:

Value	Description
Body	Measurement inside body of Charge Point (e.g. Temperature).
Cable	Measurement taken from cable between EV and Charge Point.
EV	Measurement taken by EV.
Inlet	Measurement at network (“grid”) inlet connection.
Outlet	Measurement at a Connector. This is the default value if no location is specified.

For AC metering data captured by chargers includes a phase qualifier:

Value	Description
L1	Measured on L1.
L2	Measured on L2.
L3	Measured on L3.
N	Measured on Neutral.
L1N	Measured on L1 with respect to Neutral conductor.
L2N	Measured on L2 with respect to Neutral conductor.
L3N	Measured on L3 with respect to Neutral conductor.
L1L2	Measured between L1 and L2.
L2L3	Measured between L2 and L3.
L3L1	Measured between L3 and L1.