1# Event 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## 1500001 Want Action Is Null 8 9**Error Message** 10 11The action field in the want parameter is null. 12 13**Description** 14 15This error code is reported when the **Action** attribute in the **want** object is null for the event to send. 16 17**Possible Causes** 18 19The **Action** attribute in the **want** object is null for the event to send. 20 21**Solution** 22 23Make sure the **Action** attribute in the **want** object is not null. 24 25## 1500002 Failed to Send Common Events from a Sandbox Application 26 27**Error Message** 28 29A sandbox application cannot send common events. 30 31**Description** 32 33This error code is reported when an attempt is made to send a common event from a sandbox application. 34 35**Possible Causes** 36 37Common events from a sandbox application are blocked. 38 39**Solution** 40 41Check whether the application used to send a common event is a sandbox application. If so, switch to another application. 42 43## 1500003 Event Sending Frequency Is Too High 44 45**Error Message** 46 47The common event sending frequency too high. 48 49**Description** 50 51This error code is reported when the application sends common events too frequently. 52 53**Possible Causes** 54 55The number of common events sent by the application in a given time frame has reached the maximum. 56 57**Solution** 58 59Do not send common events too frequently. 60 61## 1500004 Failed to Send System Common Events 62 63**Error Message** 64 65A third-party application cannot send system common events. 66 67**Description** 68 69This error code is reported when the application cannot send system common events. 70 71**Possible Causes** 72 73The application is not a system application or system service. 74 75**Solution** 76 77Make sure the application to send system common events is a system application or system service. 78 79## 1500005 Subscriber Not Found 80 81**Error Message** 82 83The subscriber is not found. 84 85**Description** 86 87This error code is reported when the subscriber cannot be found. 88 89**Possible Causes** 90 91The subscriber is deleted. 92 93**Solution** 94 95Check whether the subscription has already been canceled. If the subscription has been canceled, the subscriber is deleted. 96 97## 1500006 Invalid User ID 98 99**Error Message** 100 101Invalid userId. 102 103**Description** 104 105This error code is reported when the user ID is invalid. 106 107**Possible Causes** 108 109The user ID is different from the system user ID, or the application is not a system application or system service. 110 111**Solution** 112 1131. Make sure the current user ID is the same as the system user ID. 1142. Make sure the application is a system application or system service. 115 116## 1500007 Failed to Send a Request Through IPC 117 118**Error Message** 119 120Failed to send the message to the common event service. 121 122**Description** 123 124This error code is reported when the attempt to send a request through IPC fails. 125 126**Possible Causes** 127 128The connection object fails to be created. 129 130**Solution** 131 132Do not set up connections frequently. Try again later. 133 134## 1500008 Failed to Initialize the Common Event Service 135 136**Error Message** 137 138Failed to initialize the common event service. 139 140**Description** 141 142This error code is reported when an error occurs on the server. 143 144**Possible Causes** 145 146A service exception occurs when the server processes data. 147 148**Solution** 149 150Try again later. 151 152## 1500009 Failed to Obtain System Parameters 153 154**Error Message** 155 156Failed to obtain system parameters. 157 158**Description** 159 160This error code is reported when an exception occurs in the system during service processing, for example, when the current system time fails to be obtained. 161 162**Possible Causes** 163 164A system fault occurs. 165 166**Solution** 167 168Try again later. 169 170## 1500010 The Number of Subscribers Exceeds the Upper Limit 171 172**Error Message** 173 174The count of subscriber exceed system specification. 175 176**Description** 177 178This error code is reported when the number of subscribers exceeds the upper limit. 179 180**Possible Causes** 181 182The subscriber is not unregistered in a timely manner when it is no longer used. 183 184**Solution** 185 186Unregister the subscriber that is no longer used in the application. If the subscriber has been unregistered, try again later. 187