| ERROR | cannot register/get user callback for non-environment handle |
| CAUSE | A user callback registration or get was attempted on a handle which is not an environment handle. |
| ACTION | Pass the environment handle to register/get user callback. |
| ERROR | cannot register/get user callback for non-environment handle |
| CAUSE | A user callback registration or get was attempted on a handle which is not an environment handle. |
| ACTION | Pass the environment handle to register/get user callback. |