[eGroupWare-developers] Carddav Update Works but Add Fails

[Dr. D. <dr...@ya...>]

For some reason, adding an entry to the addressbook via groupdav is failing with a HTTP "403 Forbidden" error, while updates and deletes are working fine.  Contacts can be added via egroupware's web interface without any issues.  Calendar events can be added/ deleted via groupdav as well.  I have tested using Thunderbird+Sogo/Lightning and iPhone but received the same results. Below are some excerpts from the Log:
 
Failed Operation -
Contact Add:
### PUT /<user>/addressbook/C5A1EBCD-7AD0-0001-4FDA-106A1470DA10.vcf --> "403 Forbidden" took 0.072 s
 
Successful operations -
Contact update:
PUT /<user>/addressbook/d1410008cd4d7be99b75bcb8ec8b5abb.vcf --> "204 No Content" took 0.247 s
Contact delete:
*** DELETE /<user>/addressbook/5b25b4bc9d4bb3ab864b5d2379fcbf7a.vcf --> "204 No Content" took 0.298 s
Event Add:
*** PUT /<user>/calendar/1039b438-a196-49e4-9fb8-b5d23c3f1800.ics --> "201 Created" took 0.395 s
Event Delete:
DELETE /<user>/calendar/1039b438-a196-49e4-9fb8-b5d23c3f1800.ics --> "204 No Content" took 0.152 s
 
Does this sound like a bug or could I be missing in the configuration?  I am using LDAP backend for authentication and addressbook storage.  There are no errors in the Apache logs.
 
Regards,
Debasis Datta