What are CP-like codes or designations after SAS or Scandinavian flight attendant names?

I emailed the SAS museum in Oslo to inquire about the acronyms in this photo description. It took awhile, but I finally got the following reply:

I'm a retired SAS-captain volunteering at our museum. These codes are IATA communication codes. CPH is Copenhagen airport, CV is the name of a SAS-sub group, the cabin attendant's group there. So if I were to send a old fashioned telex to that group, I would include a NAME with address CPHCV. Similarly, my former address would be my NAME, OSLOA. These addresses were used within almost all airline companies, an external message to me would be addressed NAME, OSLOASK, where SK denotes SAS.

CPHKA is the address of the administrative SAS-department in charge of all SAS stations within Denmark. CPHZC-S is unknown to me, but -S indicates a further sub-division.

We used to have mail departments at all SAS stations, and this type of addressing was extensively used on envelopes and in phone-directories. These days, we still have mail departments, but these are greatly reduced since e-mail has taken over communication.

You'll find more info on internet: https://en.wikipedia.org/wiki/IATA_airport_code and: https://www.iata.org/en/services/codes/

Best of luck with your studying.

Leif Leren, at the SAS-museum at OSL.