To register maintenance work, use the command unit/registry_maintenance_event:
svc=unit/registry_maintenance_event¶ms={"date":<uint>, "info":<text>, "duration":<int>, "cost":<double>, "location":<text>, "x":<double>, "y":<double>, "description":<text>, "mileage":<double>, "eh":<int>, "done_svcs":<text>, "itemId":<long>}
| Name | Description | 
|---|---|
| date | date | 
| info | kind of work | 
| duration | duration | 
| cost | cost | 
| location | location | 
| x | longitude | 
| y | latitude | 
| description | description | 
| mileage | mileage | 
| eh | engine hours | 
| done_svcs | list of services (comma-separated) | 
| itemId | unit ID | 
{} /* empty object if execution successful, if not - error code */