The Web Services VIs and functions can return the following error codes. Refer to the KnowledgeBase for more information about correcting errors in LabVIEW.

Code Description
−356060 LabVIEW Web Services: An unexpected communication error has occurred with the remote target. This error typically occurs when the LabVIEW application on the remote target has crashed or restarted unexpectedly. Subsequent calls to this Web service will attempt to repair the communication error. However, the application may no longer be in a known good state.
−356010 LabVIEW Web Services: The specified property or method cannot be used over a network. Execute this property or method only on the local host.
−67750 LabVIEW Web Services: Memory Allocation failed.
−67508 LabVIEW Web Services: An error occurred when extracting the deployed Web service. The file path might be too long. Reduce the length of VI filenames, directory names, or the Web service itself.
−67506 LabVIEW Web Services: An operating system exception encountered.
−67505 LabVIEW Web Services: Message received is invalid for the current state of the File Receiver.
−67504 LabVIEW Web Services: Error creating a temporary file.
−67503 LabVIEW Web Services: Invalid message received. An unknown type of message was received.
−67502 LabVIEW Web Services: Copying data to or from a LabVIEW terminal failed.
−67501 LabVIEW Web Services: Parse failed. Error encountered while parsing a default string or a routing template.
−67500 LabVIEW Web Services: Memory allocation failed.
−67404 LabVIEW Web Services: Web service deployment failed. The Web service installer received an error when attempting to deploy. The Web service has not been installed.
−67403 LabVIEW Web Services: Unexpected response from the server. The Web service installer received an unexpected response from the server. The Web service has not been installed.
−67402 LabVIEW Web Services: Authentication failed. Either the Web service installer did not receive the correct credentials or authentication was cancelled. The Web service has not been installed.
−67401 LabVIEW Web Services: Unable to detect Application Web Server port. The Web service installer was unable to detect the port of the Application Web Server. The Web service has not been installed.
−67400 LabVIEW Web Services: Failed to start the Application Web Server. The Web service installer was unable to start the correct version of the Application Web Server. The Web service has not been installed.
−67306 LabVIEW Web Services: Invalid session ID specified.
−67305 LabVIEW Web Services: Function not available for service VIs configured for headerless mode. The function attempted by the Web service method is not available for Web service methods configured for headerless mode.
−67304 LabVIEW Web Services: Function not available for service VIs configured for output terminal mode. The function attempted by the Web service method is not available for services configured for the output terminal mode.
−67303 LabVIEW Web Services: Variable not defined for current session. The variable being accessed has not been defined for the session associated with the current request.
−67302 LabVIEW Web Services: Input Request ID has no associated session.
−67301 LabVIEW Web Services: Invalid Request ID. The value wired into the httpRequestID terminal of the VI is invalid.
−67300 LabVIEW Web Services: Internal error in LabVIEW Web services runtime. This could be a memory error or a file error.
−67164 LabVIEW Web Services: A non-printable ASCII character was encountered. Only printable ASCII characters are allowed in terminal labels, service names, and VI names.
−67163 LabVIEW Web Services: Error encountered while writing data to the socket.
−67162 LabVIEW Web Services: LabVIEW string conversion error.
−67161 LabVIEW Web Services: LabVIEW C Interface memory management error.
−67160 LabVIEW Web Services: LabVIEW C Interface table not found.
−67159 LabVIEW Web Services: LabVIEW application not found.
−67158 LabVIEW Web Services: Error encountered while writing session variable.
−67157 LabVIEW Web Services: Error encountered while flushing data into the socket.
−67156 LabVIEW Web Services: Unknown map error.
−67155 LabVIEW Web Services: Request variables associated with the current request not found.
−67154 LabVIEW Web Services: Invalid LabVIEW array handle encountered.
−67153 LabVIEW Web Services: Session variables defined for the current session not found.
−67152 LabVIEW Web Services: The current request not found.
−67151 LabVIEW Web Services: Web service active request map not found.
−67150 LabVIEW Web Services: Web Service session manager not found.
−67043 LabVIEW Web Services: The Web service is currently unavailable because it is still loading, has crashed, or is disabled. Try accessing the service again later or restarting the Web server. This error corresponds to HTTP status code 503 and is usually a temporary condition.
−67041 LabVIEW Web Services: Invalid value for input parameter.
−67040 LabVIEW Web Services: An invalid HTTP method was encountered.
−67039 LabVIEW Web Services: Invalid character encountered in terminal name. An invalid character, such as an open or close bracket, is present in a terminal name of an HTTP method VI.
−67038 LabVIEW Web Services: Duplicate terminal name encountered. Multiple terminals with the same name exist on the connector pane of an HTTP method VI.
−67037 LabVIEW Web Services: An invalid content header was encountered.
−67035 LabVIEW Web Services: ESP Error. An error was encountered while rendering an ESP script or setting an ESP variable. This may occur because scripting was not enabled on the server or due to an error in the ESP script.
−67034 LabVIEW Web Services: Object not found in the object map.
−67033 LabVIEW Web Services: A Web service already exists with the input name.
−67032 LabVIEW Web Services: This type of Web service is not supported.
−67030 LabVIEW Web Services: Unable to load shared library.
−67029 LabVIEW Web Services: SetSysAdminMgr function not found in shared library published as a Web service.
−67028 LabVIEW Web Services: Finalize method not found in Web services shared library. A shared library published as a Web service did not define Finalize method.
−67027 LabVIEW Web Services: Resume method not found in Web services shared library. A shared library published as a Web service did not define Resume method.
−67026 LabVIEW Web Services: Pause method not found in Web services shared library. A shared library published as a Web service did not define Pause method.
−67025 LabVIEW Web Services: Init not found in Web services shared library. A shared library published as a Web service did not define Init method.
−67024 LabVIEW Web Services: Run not found in Web services shared library. A shared library published as a Web service did not define Run method.
−67023 LabVIEW Web Services: An operating system exception encountered.
−67022 LabVIEW Web Services: The current service command is not defined for the variable type encountered.
−67021 LabVIEW Web Services: Error while creating directory.
−67020 LabVIEW Web Services: Invalid service directory name encountered.
−67019 LabVIEW Web Services: VI checksum mismatch.
−67018 LabVIEW Web Services: Shared Variable engine failure.
−67017 LabVIEW Web Services: No INI file found in service directory.
−67016 LabVIEW Web Services: File I/O error.
−67015 LabVIEW Web Services: System is currently in an invalid state for the current message.
−67014 LabVIEW Web Services: Invalid message received.
−67013 LabVIEW Web Services: More than one INI file encountered in a service directory.
−67012 LabVIEW Web Services: Error encountered while parsing INI file.
−67011 LabVIEW Web Services: Copying data to the VI terminal(s) failed.
−67010 LabVIEW Web Services: An unsupported LabVIEW data type encountered.
−67009 LabVIEW Web Services: Call to run a VI failed.
−67008 LabVIEW Web Services: The VI has not been cached.
−67007 LabVIEW Web Services: The service has already been registered.
−67006 LabVIEW Web Services: The VI has already been cached.
−67005 LabVIEW Web Services: Unknown VI name. Unable to locate the named VI.
−67004 LabVIEW Web Services: Memory allocation failure.
−67003 LabVIEW Web Services: Call to create a VI reference failed. The target might not support SSE2 optimization. Disable SSE2 optimization on the Advanced page of the Web Service Properties dialog box before proceeding.
−67002 LabVIEW Web Services: Call to create a reference to the LabVIEW application failed.
−67001 LabVIEW Web Services: The Web service is undefined.
−67000 LabVIEW Web Services: A LabVIEW internal error occurred.
67200 LabVIEW Web Services: Cannot modify http header or response after written to socket. HTTP headers and/or response have already been written to the client for the current request. They cannot be modified.
67201 LabVIEW Web Services: Required input string is empty.
67202 LabVIEW Web Services: No POST data available for input Request ID. The current request does not contain postdata.