1# HiSysEvent 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## 1120001 Invalid Event Domain
8
9**Error Message**
10
11Invalid event domain.
12
13**Description**
14
15This error code is reported if the **write** API is called to perform system event logging but the system ignores the logging operation because the input event domain name is invalid.
16
17**Possible Causes**
18
19The specified event domain name does not comply with the following rules:
20
21- The event domain name contains only digits, letters, and underscores (\_).
22- The event domain name starts with a letter.
23- The event domain name is not empty and contains a maximum of 16 characters.
24
25**Solution**
26
27Specify a valid event domain name.
28
29## 1120002 Invalid Event Name
30
31**Error Message**
32
33Invalid event name.
34
35**Description**
36
37This error code is reported if the **write** API is called to perform system event logging but the system ignores the logging operation because the input event name is invalid.
38
39**Possible Causes**
40
41The specified event name does not comply with the following rules:
42
43- The event name contains only digits, letters, and underscores (\_).
44- The event name starts with a letter.
45- The event name is not empty and contains a maximum of 32 characters.
46
47**Solution**
48
49Check whether the event name is valid.
50
51## 11200003 Environment Error
52
53**Error Message**
54
55Abnormal environment.
56
57**Description**
58
59This error code is reported if the **write** API is called to perform system event logging but the system ignores the logging operation because the environment is abnormal.
60
61**Possible Causes**
62
631. The hiview service fails to be started.
642. The socket of the hiview service is abnormal.
65
66**Solution**
67
68Call the **write** API again to perform event logging.
69
70## 11200004 Invalid Event Length
71
72**Error Message**
73
74The event length exceeds the limit.
75
76**Description**
77
78This error code is reported if the **write** API is called to perform system event logging but the system ignores the logging operation because the total event length is invalid.
79
80**Possible Causes**
81
82The total event length exceeds 384 KB.
83
84**Solution**
85
86Check whether the total event length is greater than 384 KB.
87
88## 11200051 Invalid Event Parameter
89
90**Error Message**
91
92Invalid event parameter.
93
94**Description**
95
96This error code is reported if the **write** API is called to perform system event logging but the system throws an exception because the input parameter name is invalid. However, the system will continue to complete the logging operation.
97
98**Possible Causes**
99
100The specified event parameter name does not comply with the following rules:
101
102- The event parameter name contains only digits, letters, and underscores (\_).
103- The event parameter name starts with a letter.
104- The event parameter name is not empty and contains a maximum of 48 characters.
105
106**Solution**
107
108Check whether the event parameter name is valid.
109
110## 11200052 Length of Event Parameter Values of the String Type Exceeding the Limit
111
112**Error Message**
113
114The size of the event parameter of the string type exceeds the limit.
115
116**Description**
117
118This error code is reported if the **write** API is called to perform system event logging but the system throws an exception because the length of event parameter values of the string type is invalid. However, the system will continue to complete the logging operation.
119
120**Possible Causes**
121
122The length of parameter values of the string type exceeds 10 KB.
123
124**Solution**
125
126Check whether the length of parameter values of the string type exceeds 10 KB.
127
128## 11200053 Number of Event Parameters Exceeding the Limit
129
130**Error Message**
131
132The number of event parameters exceeds the limit.
133
134**Description**
135
136This error code is reported if the **write** API is called to perform system event logging but the system throws an exception because the number of event parameters is invalid. However, the system will continue to complete the logging operation.
137
138**Possible Causes**
139
140The number of event parameters exceeds 128.
141
142**Solution**
143
144Check whether the number of event parameters exceeds 128.
145
146## 11200054 Length of Event Parameter Values of the Array Type Exceeding the Limit
147
148**Error Message**
149
150The number of event parameters of the array type exceeds the limit.
151
152**Description**
153
154This error code is reported if the **write** API is called to perform system event logging but the system throws an exception because the length of event parameter values of the array type is invalid. However, the system will continue to complete the logging operation.
155
156**Possible Causes**
157
158The length of a parameter values of the array type exceeds 100.
159
160**Solution**
161
162Check whether the length of the parameter value of the array type exceeds 100.
163
164## 11200101 Number of Event Watchers Exceeding the Limit
165
166**Error Message**
167
168The number of watchers exceeds the limit.
169
170**Description**
171
172This error code is reported if the **addWatcher** API is called to add an event watcher but the system rejects the operation because the number of watchers has exceeded the limit.
173
174**Possible Causes**
175
176A total of 30 event watchers have been added.
177
178**Solution**
179
180Check whether the number of event watchers exceeds 30.
181
182## 11200102 Number of Event Watcher Rules Exceeding the Limit
183
184**Error Message**
185
186The number of watch rules exceeds the limit.
187
188**Description**
189
190This error code is reported if the **addWatcher** API is called to add an event watcher but the system rejects the operation because the number of watcher rules has exceeded the limit.
191
192**Possible Causes**
193
194A total of 20 event watcher rules have been added.
195
196**Solution**
197
198Check whether the number of event watcher rules exceeds 20.
199
200## 11200201 Event Watcher Not Exist
201
202**Error Message**
203
204The watcher does not exist.
205
206**Description**
207
208This error code is reported if the **removeWatcher** API is called to remove an event watcher but the system rejects the operation because the watcher does not exist.
209
210**Possible Causes**
211
2121. The event watcher to be removed is empty.
2132. The event watcher to be removed has not been successfully added.
214
215**Solution**
216
217Check whether the event watcher to the removed is empty or whether the event watcher has been successfully added.
218
219## 11200301 Number of Query Rules Exceeding the Limit
220
221**Error Message**
222
223The number of query rules exceeds the limit.
224
225**Description**
226
227This error code is reported if the **query** API is called to query system events but the system ignores the operation because the number of query rules has exceeded the limit.
228
229**Possible Causes**
230
231The number of query rules exceeds 100.
232
233**Solution**
234
235Check whether the number of query rules exceeds 100.
236
237
238## 11200302 Invalid Query Rule
239
240**Error Message**
241
242Invalid query rule.
243
244
245**Description**
246
247This error code is reported if the **query** API is called to query system events but the system ignores the operation because the input query rule is invalid.
248
249**Possible Causes**
250
2511. The event domain name in the query rule contains more than 16 characters or the event name contains more than 32 characters.
2522. The event domain name or event name in the query rule contains special characters.
2533. The event domain name or event name in the query rule is empty.
254
255**Solution**
256
257Check whether the event domain name and event name configured in the query rule are valid.
258
259## 11200303 Number of Concurrent Queries Exceeding the Limit
260
261**Error Message**
262
263The number of concurrent queriers exceeds the limit.
264
265**Description**
266
267This error code is reported if the **query** API is called to query system events but the system ignores the operation because the number of concurrent queries has exceeded the limit.
268
269**Possible Causes**
270
271The number of concurrent queries exceeds 4.
272
273**Solution**
274
275Check whether more than four queries are performed at the same time.
276
277## 11200304 Query Frequency Exceeding the Limit
278
279**Error Message**
280
281The query frequency exceeds the limit.
282
283**Description**
284
285This error code is reported if the **query** API is called to query system events but the system ignores the operation because the query frequency has exceeded the limit.
286
287**Possible Causes**
288
289More than 50 queries are performed in one second.
290
291**Solution**
292
293Check whether more than 50 queries are performed in one second.
294
295## 11200305 Unsubscription Failed
296
297**Error Message**
298
299Unsubscription failed.
300
301**Description**
302
303This error code is reported when the **unsubscribe()** API fails to be called.
304
305**Possible Causes**
306
307The HiView service is abnormal.
308
309**Solution**
310
311Call the **unsubscribe()** API again.
312