| Exception | Description | 
|---|---|
| KeyAlreadyExistException | |
| ObjectNotFoundException | 
 This exception is used in cases when a client tries to perform an action on a non existing space
 object 
 | 
| RestException | |
| TypeAlreadyRegisteredException | |
| TypeNotFoundException | 
 This exception is used in cases when a client tries to perform an write/update operation on a
 type that is not registered in space 
 | 
| UnsupportedTypeException | 
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