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Error 107417495: Trigger Line Requested Could Not Be Reserved because it is Already in Use

Updated Jan 18, 2023

Reported In


  • LabVIEW Full


Primary Software: LabVIEW Development Systems>>LabVIEW Professional Development System 2011
Hardware: PXI/CompactPCI

Issue Details

I’m trying to communicate with a module in my PXI chassis with LabVIEW, but I receive the error message Error - 1074107495 occurred at niFgen Create Waveform (DBL).vi.

I’ve tried restarting the device through MAX and have ensured that my LabVIEW coding includes a VI to clear the reference to the instrument yet this error still persists. How can I resolve this issue?


In Measurement and Automation Explorer (MAX) you have the ability to reserve triggers on a device. Therefore if a trigger is reserved through MAX, when a VI tries to use the trigger line it will receive an error to say that the trigger line is in use.

To resolve this issue, open the MAX software through Start >> All Programs >> National Instruments >> Measurement and Automation Explorer. Then expand Devices and Interfaces, click on your PXI chassis and select the Triggers tab at the bottom of the screen. The checkboxes on the Triggers tab denote whether a trigger on the backplane has already been reserved e.g. for third party modules. Ensure that the checkbox corresponding to your device is unchecked and re-run the LabVIEW VI.