# errorMsgOnSubmit

To determine weather error messages of the fields need to show on field change or only on form submit

> * Type:       boolean
> * Default:   false

```typescript
import {NgMatFormOptions,NgMatFormFields} from 'ng-mat-forms';
// other imports here...

export class MyTestApp {

    public ngMatFormsOptions: NgMatFormOptions = {
        column: 3,
        errorMsgOnSubmit: false //Field Changes trigger.
        // other options...
    };
}
```
