Enum describing possible field mask errors.
| Enums | |
|---|---|
| 
 | Enum unspecified. | 
| 
 | The received error code is not known in this version. | 
| 
 | The field mask must be provided for update operations. | 
| 
 | The field mask must be empty for create and remove operations. | 
| 
 | The field mask contained an invalid field. | 
| 
 | The field mask updated a field with subfields. Fields with subfields may be cleared, but not updated. To fix this, the field mask should select all the subfields of the invalid field. |