Added 2 minutes later
Ah, lol, if the caravan is moving, then "moving" is a suitable translation, but I still don't know the situation. If it's about blocking the path, then the caravan cannot pass
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honestly, if we forget that a caravan in Heroes is a cart, I would say that the caravan is moving...
Added 2 minutes ago
oh, lol, if the caravan is moving, then "transfer" is a suitable translation, but I still don't know the situation; if we're talking about blocking the path, then the caravan cannot pass.
AHAAHAHAHA why did you say that, haha
now I also think that if the caravan is a "creature" in Heroes, then it can indeed be translated 
oh my god, where did we end up 
UPD: and regarding the situation, this message "it is impossible to transfer the caravan" appears if the caravan cannot enter the city (I haven't checked regarding blocking the caravan's path on the map; in my test map, it takes 1 day to reach it :D, maybe there is the same message). but if it has reached the city, but cannot enter it because all creature slots are occupied and it has nowhere to unload, then it says that "it is impossible to transfer the caravan"
welcome
UPD: while I was thinking, I came up with a more precise way to express it (maybe
). It's like "we can't move the caravan to the city" from the roadside, or "the caravan can't transport creatures to the city" from the dwelling. Something like that. What exactly and who can't
UPD2: although, as you said, we "send" the caravan, not help it "move"... or... aaaaaaa, forget it!
enough
The caravan cannot pass/enter the city – it sounds normal, but the caravan has a plan – point A and point B, in principle, it can set off and arrive.
I have another thought that we can consider. What if this caravan is trying to "transfer" creatures into the city, but cannot, because there is no room for them 
UPD: Yes, it sounds strange, but logically, it can help creatures and transfer them into the city from itself
like "the caravan arrived and transferred creatures to the garrison." But here it cannot, all the places in the garrison are occupied, so it cannot "transfer" them 
UPD2: Well, yes, and what should be written in the game? We have strayed a bit from the thought :D How should it be written correctly? :D There is limited space there, we need to fit it into 3 words ))
I had another thought that we could consider. What if this caravan is trying to "transfer" creatures to the city, but can't because there's no room
UPD: It sounds strange, but logically, it could help creatures and transfer them to the city from itself
like, "the caravan arrived and transferred creatures to the garrison." But here, it can't, all the places in the garrison are occupied, so it can't "transfer" them
I think creatures can no longer join the town, or rather, the town cannot accept the caravan.
Oh! YES! "or rather, the town cannot accept the caravan"! YES! I think we can write in the description "cannot accept the caravan" instead of "cannot transfer the caravan". This will fit, and it sounds logical! ))
UPD: I checked now to see if the path is blocked, and yes, it's quite logical, but the message is the same. i.e., even if the caravan gets stuck somewhere 5 days away by creatures blocking its path (a week of creatures, for example), it will still say "cannot transfer the caravan" ))) and in that case, "cannot accept the caravan" mmmmmmm, well, it's still better than "transfer," but it still doesn't quite fit 
UPD2: or maybe then "cannot/impossible to receive the caravan"? Either I'm losing it, or I think this sounds a little better overall, and it fits both the situation where it cannot give out units due to an occupied garrison, and the situation where it is blocked - in both cases, we want to receive the caravan (or rather, receive creatures from the caravan. but linguistic simplification in the form of "receive the caravan" is permissible), but we can't.
The caravan is stuck) – a universal phrase for any stop.
ahaha
that's also a great option )) and most importantly – it's short. The text will definitely fit.
UPD: yes, I think your option is the best one for me. Because it also has a notification at the top that "some caravans cannot move further." And why can't they move further? That's right! Because they are "stuck"! :D It seems quite logical and sounds normal. I'll go and rewrite the text in my version.
I would say that the cart is transporting... we need to look at the context, is it a translation or a transport?
It seems that, apart from the message on the adventure map, "Some caravans cannot move further," there is nothing else.
No, the screenshot is above. It's a message from the caravan viewing panel, which is accessed in the hiring window. It's needed to see how much time they have left to travel.
Exactly.