0 

Success 

1 

Operations error 

2 

Protocol error 

3 

Time limit exceeded 

4 

Size limit exceeded 

5 

Compare false 

6 

Compare true 

7 

Authentication method not supported 

8 

Strong authentication required 

9 

Partial results and referral received 

10 

Referral received 

11 

Administrative limit exceeded 

12 

Unavailable critical extension 

13 

Confidentiality required 

14 

SASL bind in progress 

16 

No such attribute 

17 

Undefined attribute type 

18 

Inappropriate matching 

19 

Constraint violation 

20 

Type or value exists 

21 

Invalid syntax 

32 

No such object 

33 

Alias problem 

34 

Invalid DN syntax 

35 

Object is a leaf 

36 

Alias de-referencing problem 

48 

Inappropriate authentication 

49 

Invalid credentials 

50 

Insufficient access 

51 

Server is busy 

52 

Server is unavailable 

53 

Server is unwilling to perform 

54 

Loop detected 

64 

Naming violation 

65 

Object class violation 

66 

Operation not permitted on a non-leaf entry 

67 

Operation not permitted on a RDN 

68 

Entry already exists 

69 

Cannot modify object class 

70 

Results too large 

71 

Affects multiple servers 

76 

Virtual list view error 

80 

Unknown error 

81 

Cannot contact LDAP server 

82 

Local error 

83 

Encoding error 

84 

Decoding error 

85 

Timed out 

86 

Unknown authentication method 

87 

Bad search filter 

88 

User cancelled operation 

89 

Bad parameter to an LDAP routine 

90 

Out of memory 

91 

Cannot connect to the LDAP server 

92 

Not supported by this version of LDAP 

93 

Requested LDAP control not found 

94 

No results returned 

95 

Additional results to return 

96 

Client detected loop 

97 

Referral hop limit exceeded