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 47Too many common events are send in a short period of time. 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** 1121. Make sure the current user ID is the same as the system user ID. 1132. Make sure the application is a system application or system service. 114 115## 1500007 Failed to Send a Request Through IPC 116 117**Error Message** 118 119Failed to send the message. 120 121**Description** 122 123This error code is reported when the attempt to send a request through IPC fails. 124 125**Possible Causes** 126 127The connection object fails to be created. 128 129**Solution** 130 131Do not set up connections frequently. Try again later. 132 133## 1500008 Failed to Read Data 134 135**Error Message** 136 137Failed to read the data. 138 139**Description** 140 141This error code is reported when an error occurs on the server. 142 143**Possible Causes** 144 145A service exception occurs when the server processes data. 146 147**Solution** 148 149Try again later. 150 151## 1500009 System Error 152 153**Error Message** 154 155System error. 156 157**Description** 158 159This 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. 160 161**Possible Causes** 162 163A system fault occurs. 164 165**Solution** 166 167Try again later.