pricing unit
 

What is pricing unit, how to determine if a fare have more than 1 pricing unit?
i know pricing unit means the ticket can be issued on its own but if we have a mix class involve how we can find out if 2 pricing unit involve? :(

"Pricing unit" isn't a term we commonly see w.r.t. airline tickets. You might get more help if you post the specific example or question. People on the airline forum in question will know the best. Your answer will vary widely based on all of these specifics.

It sounds like a question about two fare buckets on a single itin, perhaps one seated in coach and one in business or first? :confused:

I think pricing unit refers to fare components.

For example, if you book JFK-LHR-TXL you may be presented with options that involve one pricing unit/fare component or two.

For one:
JFK-LHR-TXL uses a JFK-TXL fare, with a stop in LHR.

For two:
JFK-LHR is sold as one fare component
LHR-TXL is sold as a second fare component

You can most easily see this on ITA (it will return the cheapest fare, regardless of number of fare components). In the fare details you can see whether the entire journey is covered under one fare component or two.

i.e:
Fare 1: Carrier BA SHV3PXOW NYC to LON (rules)
Fare 2: Carrier BA SH5381DHR LON to BER (rules)