# Error No NS record at zone apex in zone example.tld when modifying a DNS zone

## Symptoms

The following error is thrown when modifying a DNS zone:

```
Error No NS record at zone apex in zone example.tld
```

## Cause

There are no records of NS type in the zone.

If Openprovider nameservers are being used, these records are automatically added.

The error can occur when 'custom nameservers' / 'vanity nameservers' / 'whitelabled nameservers' functionality is enabled within a reseller account.

## Resolution

Add NS records to the zone, which correspond to the nameservers that are assigned to the domain.