1# Certificate Error Codes
2
3> **NOTE**
4>
5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md).
6
7## 19020001 Memory Error
8
9**Error Message**
10
11Memory error.
12
13**Possible Causes**
14
15The memory allocation failed.
16
17**Solution**
18
191. Check whether the system is running properly.
202. Check whether the service data is too long.
21
22## 19020002 Runtime Error
23
24**Error Message**
25
26Runtime error.
27
28**Possible Causes**
29
30An unexpected error occurs.
31
32**Solution**
33
34Check whether the system is running properly.
35
36## 19030001 Crypto Operation Error
37
38**Error Message**
39
40Crypto operation error.
41
42**Possible Causes**
43
44An error occurs when the cryptography framework interacts with a third-party algorithm library.
45
46**Solution**
47
481. Check whether the input parameters are correct.
492. Check whether the third-party algorithm library functions properly.
50
51## 19030002 Certificate Signature Verification Failed
52
53**Error Message**
54
55The certificate signature verification failed.
56
57**Possible Causes**
58
59Incorrect certificate signature information is found during the signature verification.
60
61**Solution**
62
63Check whether the certificate is correct.
64
65## 19030003 Certificate Has Not Taken Effect
66
67**Error Message**
68
69The certificate has not taken effect.
70
71**Possible Causes**
72
73The certificate has not taken effect. The effective time of the certificate is later than the current system time or the time specified by the service.
74
75**Solution**
76
771. Check whether the certificate is correct.
782. Check whether the system time is correct.
793. Compare the certificate effective time with the current system time to determine whether the certificate has taken effect.
80
81## 19030004 Certificate Expired
82
83**Error Message**
84
85The certificate has expired.
86
87**Possible Causes**
88
89The certificate has expired. The certificate expiration time is earlier than the current system time or the time specified by the service.
90
91**Solution**
92
931. Check whether the certificate is correct.
942. Check whether the system time is correct.
953. Compare the certificate expiration time with the current system time to determine whether the certificate has expired.
96
97## 19030005 Failed to Obtain the Certificate Issuer
98
99**Error Message**
100
101Failed to obtain the certificate issuer.
102
103**Possible Causes**
104
105The certificate issuer cannot be obtained during certificate verification.
106
107**Solution**
108
109Check whether the certificate is correct.
110
111## 19030006 Key Cannot be Used for Signing a Certificate
112
113**Error Message**
114
115The key cannot be used for signing a certificate.
116
117**Possible Causes**
118
119The key cannot be used to sign certificates.
120
121**Solution**
122
123Check whether the certificate is correct.
124
125## 19030007 Key Cannot be Used for Digital Signature
126
127**Error Message**
128
129The key cannot be used for digital signature.
130
131**Possible Causes**
132
133The key cannot be used for digital signature.
134
135**Solution**
136
137Check whether the certificate is correct.
138