A requirement, due to indebtedness (10)

I believe the answer is:

obligation

This clue is a triple definition!

'a requirement' is the first definition.
(thesaurus)

'due' is the second definition.
(thesaurus)

'to indebtedness' is the third definition.
(obligation is a kind of indebtedness)

(Another definition for obligation that I've seen is " Duty".)

I've seen this clue in the Evening Standard.

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