Front Panel function and Error

[Jyothis]

What is this function and why is this error popping up ??

 

[LogMAN]

Welcome to LavaG.

This is a queue: What Is a Queue in LabVIEW? - NI

You probably tried to delete the control inside the queue indicator. This does not work because a queue must always have a subtype. As the error message suggests, simply drag a new type on the queue indicator and it will replace the existing one.

Alternatively, use the 'Obtain Queue' function on your block diagram to create a new indicator based on the configured input type.

[crelf]

Also, please post the VI - the issue might be in the code, not the front panel.