1# DistributedNotificationService 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## 1600001 Internal Error 8 9**Error Message** 10 11Internal Error. 12 13**Description** 14 15This error code is reported when an internal error occurs, such as a memory allocation or multi-thread processing error. 16 17**Possible Causes** 18 19A common kernel error, such as a memory allocation or multi-thread processing error, occurs. 20 21**Solution** 22 231. Ensure sufficient system memory. 242. Restart the system. 25 26## 1600002 Data Processing or Interaction Error Between the Application and Notification Subsystem 27 28**Error Message** 29 30IPC Error. 31 32**Description** 33 34This error code is reported when a serialization or deserialization error occurs and the interaction with the notification subsystem fails. 35 36**Possible Causes** 37 381. A serialization and deserialization error occurs. 392. The interaction with the notification subsystem fails. 40 41**Solution** 42 431. Make sure the input parameter value length is within the valid range. 442. Make sure the input parameter value is valid. 453. Make sure the notification subsystem has been started. 46 47## 1600003 Failed to Connect to the Service 48 49**Error Message** 50 51Failed to connect to service. 52 53**Description** 54 55This error code is reported when the connection with the notification subsystem fails. 56 57**Possible Causes** 58 59The service is busy or the notification subsystem is not working correctly. 60 61**Solution** 62 631. Try again later. 642. Make sure the notification subsystem is started. 65 66## 1600004 Notification Is Disabled 67 68**Error Message** 69 70Notification is not enabled. 71 72**Description** 73 74This error code is reported when the notification feature is disabled. 75 76**Possible Causes** 77 78The notification feature is not enabled manually. By default, this feature is disabled. 79 80**Solution** 81 82Enable the notification feature. 83 84## 1600005 Notification Slot Is Disabled 85 86**Error Message** 87 88Notification slot is not enabled. 89 90**Description** 91 92This error code is reported when the notification slot is disabled. 93 94**Possible Causes** 95 96The notification slot is disabled. 97 98**Solution** 99 100Make sure the application notification slot is enabled. 101 102## 1600006 Unable to Remove the Notification 103 104**Error Message** 105 106Notification is not allowed to remove. 107 108**Description** 109 110This error code is reported when the notification removal does not comply with the permission settings. 111 112**Possible Causes** 113 1141. When **isUnremovable** is set to **true**, notifications can only be removed on a one-by-one basis. 1152. When **isRemoveAllowed** is set to **false**, no notification can be removed. 116 117**Solution** 118 1191. Check whether **isUnremovable** is set to **true** 1202. Check whether **isRemoveAllowed** is set to **false**. 121 122## 1600007 Notification Not Found 123 124**Error Message** 125 126The notification is not exist. 127 128**Description** 129 130This error code is reported when the target notification is not found. 131 132**Possible Causes** 133 1341. The notification has been deleted. 1352. The notification has been canceled. 136 137**Solution** 138 1391. Make sure the notification exists. 140 141## 1600008 User Not Found 142 143**Error Message** 144 145The user is not exist. 146 147**Description** 148 149This error code is reported when the target user is not found. 150 151**Possible Causes** 152 1531. The user ID is incorrect. 1542. No user account has not been activated. 155 156**Solution** 157 158Make sure the user account with the specified ID has been activated. 159 160## 1600009 Maximum Number of Notifications per Second Reached 161 162**Error Message** 163 164Over max number notifications per second. 165 166**Description** 167 168This error code is reported when the number of notifications sent per second has reached the maximum. 169 170**Possible Causes** 171 172More than 10 notifications are sent per second. 173 174**Solution** 175 176Reduce the number of notifications sent per second to 10 or less. 177 178## 1600010 Distributed Processing Error 179 180**Error Message** 181 182Distributed operation failed. 183 184**Description** 185 186This error code is reported when a database processing error occurs or the database operations are too frequent. 187 188**Possible Causes** 189 1901. A database processing error occurs. 1912. The database operations are too frequent. 192 193**Solution** 194 1951. Make sure the distributed data is running properly. 1962. Reduce the database operation frequency. 197 198## 1600011 Failed to read the Template Configuration File 199 200**Error Message** 201 202Read template config failed. 203 204**Description** 205 206This error code is reported when the template configuration file fails to be read. 207 208**Possible Causes** 209 2101. The template configuration file is lost. 2112. The current template version is not supported. 212 213**Solution** 214 2151. Check for the **/system/etc/notification_template/external.json** file. 2162. Update the system version to 3.2 or later. 217 218## 17700001 Bundle Name Not Found 219 220**Error Message** 221 222The specified bundle name was not found. 223 224**Description** 225 226This error code is reported when the specified bund name is not found. 227 228**Possible Causes** 229 2301. The bundle name is incorrect. 2312. The application is not installed. 232 233**Solution** 234 2351. Verify the bundle name. 236 2372. Make sure the application has been installed.