Sales support essential for this city (6)

I believe the answer is:

aleppo

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'for this city' is the definition.
(Aleppo is an example)

I can't explain the remainder of the clue.

(Other definitions for aleppo that I've seen before include "Foreign city" , "Lap Poe around the Syrian city" , "Tomorrow" , "War-torn city of Syria" , "Ancient city, in Syria" .)

I've seen this clue in The Irish Times.

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