Administration guide > Troubleshoot > Messages > CWOBJ: Messages for the ObjectGrid and related components
CWOBJ4015E
RESTSERVICE_METADATA_INVALIDNAME_ATTR_CWOBJ4015E=CWOBJ4015E: The attribute name "{0}" is invalid for entity "{1}". Attributes cannot begin with characters: $_
Explanation
The Microsoft ADO.NET Data Service specification does not allow entity properties to begin with $ or _ characters.
User response
Rename the attribute field or property defined in the entity descriptor XML file or entity metadata class to a name that does not start with a reserved character and restart the eXtreme Scale grid and the REST data service.
Parent topic:
CWOBJ: WebSphere eXtreme Scale messages for the ObjectGrid and related components