LDAP Client API Error Conditions

When most LDAP APIs fail to complete successfully, ld_errno usually indicates one of the following errors. Under some conditions, ld_errno could indicate an error other than those listed here.

 LDAP_SUCCESS			0x00 - The request was successful.
 LDAP_OPERATIONS_ERROR		0x01 - An operations error occurred.
 LDAP_PROTOCOL_ERROR		0x02 - A protocol violation was detected.
 LDAP_TIMELIMIT_EXCEEDED	0x03 - An LDAP time limit was exceeded.
 LDAP_SIZELIMIT_EXCEEDED	0x04 - An LDAP size limit was exceeded.
 LDAP_COMPARE_FALSE		0x05 - A compare operation returned false.
 LDAP_COMPARE_TRUE		0x06 - A compare operation returned true.
 LDAP_STRONG_AUTH_NOT_SUPPORTED	0x07 - The LDAP server does not support strong authentication.
 LDAP_STRONG_AUTH_REQUIRED	0x08 - Strong authentication is required for the operation.
 LDAP_PARTIAL_RESULTS		0x09 - Partial results only returned.
    
 LDAP_REFERRAL			0X0A - Referral returned.
 LDAP_ADMIN_LIMIT_EXCEEDED	0X0B - Administration limit exceeded.
 LDAP_UNAVAILABLE_CRITICAL_EXTENSION 0X0C - Critical extension not supported.

 LDAP_NO_SUCH_ATTRIBUTE		0x10 - The attribute type specified does not exist in the entry.
 LDAP_UNDEFINED_TYPE		0x11 - The attribute type specified is not valid.
 LDAP_INAPPROPRIATE_MATCHING	0x12 - Filter type not supported for the specified attribute.
 LDAP_CONSTRAINT_VIOLATION	0x13 - An attribute value specified violates some constraint (for
				       example, a postal address has too many lines, or a line
                                       that is too long).
 LDAP_TYPE_OR_VALUE_EXISTS	0x14 - An attribute type or attribute value specified already exists in the entry.
 LDAP_INVALID_SYNTAX		0x15 - An attribute value was specified that is not valid.

 LDAP_NO_SUCH_OBJECT		0x20 - The specified object does not exist in the directory.
 LDAP_ALIAS_PROBLEM		0x21 - An alias in the directory points to a nonexistent entry.
 LDAP_INVALID_DN_SYNTAX		0x22 - A distinguished name was specified that is syntactically not valid.
 LDAP_IS_LEAF			0x23 - The object specified is a leaf.
 LDAP_ALIAS_DEREF_PROBLEM	0x24 - A problem was encountered when dereferencing an alias.

 LDAP_INAPPROPRIATE_AUTH 	0x30 - Inappropriate authentication was specified (for example,
				       LDAP_AUTH_SIMPLE was specified and the entry does not have
                                       a user password attribute).
 LDAP_INVALID_CREDENTIALS	0x31 - Credentials that are not valid were presented (for example, the wrong password).
 LDAP_INSUFFICIENT_ACCESS	0x32 - The user has insufficient access to perform the operation.
 LDAP_BUSY			0x33 - The directory system agent is busy.
 LDAP_UNAVAILABLE		0x34 - The directory system agent is unavailable.
 LDAP_UNWILLING_TO_PERFORM	0x35 - The directory system agent is unwilling to perform the operation.
 LDAP_LOOP_DETECT		0x36 - A loop was detected.

 LDAP_NAMING_VIOLATION		0x40 - A naming violation occurred.
 LDAP_OBJECT_CLASS_VIOLATION	0x41 - An object class violation occurred (for example, a must attribute was missing from the entry).
 LDAP_NOT_ALLOWED_ON_NONLEAF	0x42 - The operation is not allowed on a nonleaf object.
 LDAP_NOT_ALLOWED_ON_RDN 	0x43 - The operation is not allowed on a relative distinguished name.
 LDAP_ALREADY_EXISTS		0x44 - The entry already exists.
 LDAP_NO_OBJECT_CLASS_MODS	0x45 - Object class modifications are not allowed.
 LDAP_RESULTS_TOO_LARGE		0x46 - Results too large.

 LDAP_AFFECTS_MULTIPLE_DSAS	0X47 - Affects multiple DSAS.

 LDAP_OTHER			0x50 - An unknown error occurred.
 LDAP_SERVER_DOWN		0x51 - The LDAP API cannot contact the LDAP server.
 LDAP_LOCAL_ERROR		0x52 - Some local error occurred.  This usually indicates that
				       either the LDAP support (OS/400 option 32) is not
                                       installed on the system, or a malloc() operation has failed.
 LDAP_ENCODING_ERROR		0x53 - An error was encountered while the API was encoding
                                       parameters to send to the LDAP server.
 LDAP_DECODING_ERROR		0x54 - An error was encountered while the API was decoding a
                                       result from the LDAP server.
 LDAP_TIMEOUT			0x55 - A time limit was exceeded while API was waiting for a result.
 LDAP_AUTH_UNKNOWN		0x56 - The authentication method specified to ldap_bind() is not known.
 LDAP_FILTER_ERROR		0x57 - A filter that is not valid was supplied to ldap_search()
                                       (for example, unbalanced parentheses).
 LDAP_USER_CANCELLED		0x58
 LDAP_PARAM_ERROR		0x59 - An LDAP API was called with a bad parameter (for example, a NULL ld pointer).
 LDAP_NO_MEMORY			0x5A - A memory allocation (for example, a malloc() call) failed in an LDAP API.

 LDAP_URL_ERR_NOTLDAP		0x60 - URL doesn't begin with ldap://
 LDAP_URL_ERR_NODN		0x61 - URL has no DN (required).
 LDAP_URL_ERR_BADSCOPE		0x62 - URL scope string is invalid.
 LDAP_URL_ERR_MEM		0x63 - can't allocate memory space.

 LDAP_SSL_ALREADY_INITIALIZED   0x70 - ldap_ssl_client_init successfully called previously in this process.
 LDAP_SSL_INITIALIZE_FAILED     0x71 - SSL initialization call failed.
 LDAP_SSL_INITIALIZE_NOT_CALLED 0x72 - Call ldap_ssl_client_init before attempting to use an ssl connection.
 LDAP_SSL_PARAM_ERROR           0x73 - An invalid ssl parameter was previously specified.
 LDAP_SSL_HANDSHAKE_FAILED      0x74 - Failed to connect to ssl server.