ChangeAvailability

Takes a station, an EVSE, or a single connector in or out of service.

Version: OCPP 2.0.1
Direction: CSMS → Charge Point
Functional block: Availability

ChangeAvailability also exists in OCPP 1.6, with a different payload. See the OCPP 1.6 version.

Same purpose as 1.6, addressed through the new hierarchy. Omitting evse applies the change to the whole charging station; supplying evse.id targets one EVSE, and adding evse.connectorId narrows it to one connector.

Request

Field	Type	Required	Description
`operationalStatus`	OperationalStatusEnumType	Required	`Operative` or `Inoperative`.
`evse`	EVSEType	Optional	`id`, and optionally `connectorId`. Omit to target the whole station.

json

[2, "19223201", "ChangeAvailability", {
  "operationalStatus": "Inoperative",
  "evse": { "id": 1 }
}]

Response

Field	Type	Required	Description
`status`	ChangeAvailabilityStatusEnumType	Required	Whether the change took effect.
`statusInfo`	StatusInfoType	Optional	Reason code.

json

[3, "19223201", {
  "status": "Scheduled"
}]

Values

OperationalStatusEnumType

Value	Meaning
`Operative`	In service.
`Inoperative`	Out of service.

ChangeAvailabilityStatusEnumType

Value	Meaning
`Accepted`	Applied immediately.
`Rejected`	Refused.
`Scheduled`	A transaction is running; applies when it ends.

Implementation notes

Scheduled means the same thing it did in 1.6 and is still routinely mistaken for success. The connector is still charging.

The change must survive a reboot, as in 1.6.