Deutsche Messe's sequence arrangement (6)

I believe the answer is:

scheme

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'arrangement' is the definition.
(thesaurus)

'deutsche messe's sequence' is the wordplay.
'SCHEME' is hidden within the letters.
However, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for scheme that I've seen before include "Design" , "Program" , "Plan; system" , "Plot, plan secretly" , "Project or strategy" .)

I've seen this clue in The Telegraph.

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