ERROR: No name servers found at child

[skuli434]

I have a setup that had 2 dns servers dns3-master and dns4-slave, in that setup I was able to add reverse delegation on the ripe site, then we had added one more dns server and we made it dns5-slave to the dns3-master. my problem started arousing with giving me error as follows

Quote:
>RIPE Database Webupdates
>***Error: RDNS Authorisation failed
>Show the full response message
>- From-Host: x.x.x.
>- Date/Time: Tue Jan 29 08:50:54 2013



>SUMMARY OF UPDATE:

>Number of objects found: 1
>Number of objects processed successfully: 0
>Create: 0
>Modify: 0
>Delete: 0
>No Operation: 0
>Number of objects processed with errors: 1
>Create: 1
>Modify: 0
>Delete: 0
>Syntax Errors: 0


>DETAILED EXPLANATION:





>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~
>The following object(s) were found to have ERRORS:


>---
>Create FAILED: [domain] x.x.x.in-addr.arpa
>***Info: Authorisation passed
>***Info: Syntax check passed

>domain: x.x.x.in-addr.arpa
>descr: NTT Reverse Delegation for x.x.x.0/24
>nserver: dns3.ex.com
>nserver: dns4.ex.com
>admin-c: NRa19-RIPE
>tech-c: NRa19-RIPE
>zone-c: NRa19-RIPE
>mnt-by: MNT-NEU
>changed: xx@xx.com 20130129
>source: RIPE

>***Info: Authorisation for parent [inetnum] x.x.x.x - x.x.x.x
>using mnt-lower:
>authenticated by: MNT-NEU

>**RDNS: (related to x.x.x.in-addr.arpa) ERROR: No name servers
>found at child.
>No name servers could be found at the child. This usually
>means that the child is not configured to answer queries about
>the zone.**

>***RDNS: (related to x.x.x.in-addr.arpa) CRITICAL: Fatal error in
>delegation for zone x.x.x.in-addr.arpa.

>No name servers found at child or at parent. No further
>testing can be performed.

>***Error: RDNS Authorisation failed

>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~


>The RIPE Database is subject to Terms and Conditions:
>http://www.ripe.net/db/support/db-terms-conditions.pdf


>For assistance or clarification please contact:
>RIPE Database Administration <ripe-dbm@ripe.net>



>Generated by RIPE WHOIS Update version 1.51.1 on WHOIS4
>Handled sync update (RIPE, LGC, 2013-01-29 08:50:54)
please help. thank you