# SetTransition
## Description
Request which informs a device of a daylight transiton: it has become dark (sunset) or light (sunrise). The device will switch the relays, which have schedule entries for transition messages. The optional 'time' value can be used to indicate a switch time. If the optional 'time' value is omitted the device should switch immediately. See [light schedule-entry](/gxf/protocols/oslp/oslp-v0.6.1/setschedule.md) for more information regarding switch schedules.
Response communicates status.
## Message definitions
```javascript
message SetTransitionRequest {
required TransitionType transitionType = 1; // Night-Day or Day-Night transition
optional string time = 2; // [(nanopb).max_size = 7]; // - format hhmmss UTC
}
message SetTransitionResponse {
required Status status = 1;
}
```
## Data types
```javascript
enum TransitionType {
NIGHT_DAY = 0;
DAY_NIGHT = 1;
}
enum Status {
OK = 0;
FAILURE = 1; // general failure
REJECTED = 2; // request received in wrong state
}
```
## Example
Soap requests and responses sent to and from platform:
```markup
LianderNetManagement
liander gebruiker
SoapUI
device-01
NIGHT_DAY
07:55:01
LianderNetManagement|||device-01|||20160106155501582
device-01
LianderNetManagement
liander gebruiker
SoapUI
LianderNetManagement|||device-01|||20160106155501582
device-01
OK
```
OSLP SetTransitionRequest sent to 'device-01':
```javascript
setTransitionRequest {
transitionType: NIGHT_DAY
time: "075501"
}
```
OSLP SetTransitionResponse sent to platform:
```javascript
setTransitionResponse {
status: OK
}
```
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