TAPI_E_ Constants
TAPI methods and functions may return a TAPI_E_ constant. These constants indicate the outcome of an API call.
Constant/value | Description |
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The buffer passed in to this method was not big enough. |
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No items exist that match the request. |
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An invalid media type was passed in. |
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The operation failed for an unspecified reason. |
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The device is already in use. |
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No call appearance is available. |
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Too many call completions are outstanding. |
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The conference is full and more members cannot be added. |
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The dial modifier is not supported. |
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The device is already in use. |
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The address is invalid or not properly formatted. For example, if address type is LINEADDRESSTYPE_PHONENUMBER, this error code would mean that the data entered did not appear to be a real phone number. |
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The operation is not permitted in the current address state. |
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The LINECALLPARAMS structure is invalid. |
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The call privilege is invalid. |
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The operation is not permitted in the current call state. |
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The calling card is invalid. |
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The call completion ID is invalid. |
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The country or region code is invalid. |
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The device class identifier is invalid. |
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The dialing parameters are invalid. |
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The digits are invalid. |
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The group pickup ID is invalid. |
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The location ID is invalid. |
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The message ID is invalid. ( |
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The park ID is invalid. |
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The rate is invalid. |
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The timeout value is invalid. |
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The tone is invalid. |
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An invalid list was passed as a parameter. |
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An invalid mode was passed as a parameter. |
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The call is not part of a conference. |
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The device was removed, or the device class is not recognized. |
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No Assisted Telephony requests are pending. |
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The application does not have OWNER privilege on the call. |
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The application is not registered to handle requests. |
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The request queue is already full. |
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The call handoff failed because the specified target was not found. |
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No higher priority target exists for the call handoff. |
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The amount of user-user information exceeds the maximum permitted. |
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The operation cannot be completed until all TAPI applications shut down and reinitialize. |
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You are not permitted to call this number. |
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The calling card number or other billing information was rejected. |
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The device-specific feature is invalid. |
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The button or lamp ID is invalid. |
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The button state is invalid. |
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The data segment ID is invalid. |
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The hookswitch device ID is invalid. |
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The call was disconnected. |
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No program is available to handle the request. |
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The queue of call requests is full. |
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The called number is busy. |
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The called party does not answer. |
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The called number could not be reached. |
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The request failed for unspecified reasons. |
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The request was cancelled. |
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The application's privilege level is invalid for the current operation. |
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The TERMINAL_DIRECTION passed in was invalid. |
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The terminal passed in was invalid for this operation. |
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The terminal class is invalid. |
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The service provider was removed. |
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The maximum number of streams was reached. |
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The operation could not be performed because it requires terminals to be selected. |
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The operation could not be performed because the terminal is in use. |
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The operation could not be performed because it requires the stream to be stopped. |
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The maximum number of terminals has been reached. |
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The stream passed in was invalid for this operation. |
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The call failed because of a timeout. The timeout interval is two minutes. |
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The ACD Proxy has removed this group. Operations on this object are invalid. |
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The ACD Proxy has removed this queue. Operations on this object are invalid. |
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The Agent object was created with CreateAgent and has no ID. If an ID is needed, use CreateAgentWithID. |
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The agent ID is invalid. |
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The agent group is invalid. |
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The agent password is invalid. |
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The agent state is invalid. |
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The agent activity is invalid. |
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The registry setting is corrupt. |
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The peer for one of these bridge terminals has already been assigned. |
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The peer for this bridge terminal must be set to complete this operation. |
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There is no event in the MSP's event queue. |
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This address does not support the specified address type. |
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A resource needed to fulfill the request is not available. |
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The phone is not open. |
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The specified call is not currently selected. |
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This information is not available for this type of event. |
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The format is unknown. |
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The operation is not permitted in current stream state. |
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The operation requested is not permitted for the current state. |
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The object has not been initialized. |
Requirements
Requirement | Value |
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TAPI version |
Requires TAPI 3.0 or later |
Header |
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