When you need to get a door keys for existing reservation you can use LLT_ResDoorCodeRQ call.
Request sample
<LLT_ResDoorCodeRQ PrimaryLangID="eng" AltLangID="" Version="1.003"> <UniqueID ID="3333333"/> </LLT_ResDoorCodeRQ>
Required fields:
PrimaryLangID – OTA requires it
UniqueID
Response sample (key available)
<LLT_ResDoorCodeRS> <Result>Success</Result> <DoorKeys> <Keys> <Key>Some key information</Key> <Key>Other key information</Key> </Keys> </DoorKeys> </LLT_ResDoorCodeRS>
Response sample (key not available)
<LLT_ResDoorCodeRS> <Result>Error</Result> <DoorKeys> <Keys> <Key>Some key information</Key> <Key>Other key information</Key> </Keys> </DoorKeys> </LLT_ResDoorCodeRS>