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Which of the following sentence is correct:

1) Your acknowledgement of receipt is appreciated; or
2) Your acknowledgement is appreciated.
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Hi,
These are fairly standard business jargon phrases.

However, if they are requesting the person to send an acknowledgement,
I suggest

1) Your acknowledgement of receipt will be appreciated; or
2) Your acknowledgement will be appreciated.

Better yet, say
Please acknowledge receipt. Thank you very much.

Best wishes, Clive
Comments  
They're both OK. #1 fairly obviously just asks for an acknowledgment that they received what you sent them; #2 may effectively mean the same thing or it could, depending on context, be asking for an acknowledgment of something more.
 Clive's reply was promoted to an answer.