Due All Possible (DAPO) IATA Code
 

In 2000 I traveled between the Middle East and the U.S. alot, but my company wouldn't authorize business class. The travel agency we went through, however, used to send my airline a "DAPO" (Due All Possible) IATA code via Telex. I would go to the airline customer service counter at the airport, then mention that my travel agency had sent the code, and about 50% of the time on American, I would get upgraded. Once I even scored the coveted British Airways upgrade. Of course, I have no way of knowing what was really in the airlines' computers.

Does this code or process exist anymore?

The code you're referring is actually is DOAP (Do All Possible)

I don't think that DOAP would get you any more of an upgrade than you would normally be allowed by the fare/upgrade rules (depending on the airline).

No. It's DAPO. OP was correct.

oh, my bad!

I can swear I have seen DOAP thrown around as well.

oh well, but thanks for the clarification

The code is correct as DAPO, but the second poster was correct that the D stands for "Do," not "Due." Half credit to each.

Can I write it on my ticket in green ink, like "BP1A"?