Unable to delete subscription which has a slave DNS server configured:
Unable to remove domain: Error during example.com removeZone: dnsmng failed: Unknown error 0x80131500 (COM Interop Error 80131500, Description: Management error: ErrorCode: Failed, Details: DNS_ERROR_INVALID_ZONE_TYPE, Exception: System.Management.ManagementException: Generic failure at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObject.Delete(DeleteOptions options) at System.Management.ManagementObject.Delete() at WMIMsDNS.Provider.DeleteRecordsByType(String zone, String type) at WMIMsDNS.Provider.DeleteZone(String zone, UInt32& serial)) at removeZone ZoneName = 'example.com'
This issue has been considered as software issue #PPPM-3268 and will be fixed in future product updates.
DNS Service Mode to
Master and delete subscription:
Plesk > Domains > example.com > Websites & Domains > DNS Settings > Switch DNS Service Mode.