LDAP error error

I am getting bizarre results from ldap_errno and ldap_error. I am using PHP 4.0.4pl1, iPlanet web server 4.1SP7 and iPlanet LDAP server 4.16. As a test I am trying to add an entry to LDAP that already exists. The link and bind to LDAP work properly and the LDAP log show the correct behavior: [20/Feb/2003:11:07:05 -0800] conn=330913 op=3 ADD dn="cn=test4,ou=aliases,ou=Services,dc=mycompany,dc=com" [20/Feb/2003:11:07:06 -0800] conn=330913 op=3 RESULT err=68 tag=105 nentries=0 etime=1 but my output is: Adding cn=test4,ou=Aliases,ou=Services,dc=mycompany,dc=com Warning: LDAP: add operation could not be completed. in /export/vol1/intranet/alias/ldaptest.php on line 30 ERROR: Unknown error (51151544) Here is a snippet of the code: print "Adding $entryDN<BR>\n"; $ok = ldap_add($ldlink,$entryDN,$attrs); if (!$ok) { $lderrstr = ldap_error($ldlink); $lderrno = ldap_errno($ldlink); print "ERROR: $lderrstr ($lderrno)<BR>\n"; } Thanks, - Todd