Read Tags, Check for Bad_NotFound vs Exists

Ignition
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2

I would say as soon as there are multiple tags readBlocking will be more performant.

Though, I would do it like this:

qvs = system.tag.readBlocking(['tag1','tag2','tag3','tag4','tag5'])
if any(qv.quality.isBadOrError() for qv in qvs):
    #return, possibly with error
#otherwise do stuff.
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