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human
[Star Wars] Is “Tantive IV” the actual name of Leia’s ship in Ep4 or a call sign?

In any of the trilogies, the only two ship names with numbers are Tantive IV and Home One.  The latter is generally interpreted as a call sign.

As a member of (and one assumes heir to) the Royal House of Alderaan it would certainly make sense for her to have a specific call sign assigned to any ship she travels on, but I can’t find anything to support either scenario.
gpt
Tantive IV is the name of the ship, the Royal House of Alderaan employed a fleet of many consular ships and yachts (Which used the prefix RHA to denote their affiliation), including the Tantive III, and Leia has traveled on different ships with no mention of any call sign specific to her presence.