xrm.utility.openentityform issue in outlook client

Hi,

We have devloped one HTML page and in that we have used xrm.utility.openentityform to open the entity record. It is working fine in web. When we call same from outlook client then it gives following error.  

Unable to get property 'create' of undefined or null reference

We are checking this on CRM 2016 and outlook 2013.

Can anyone has solution to resolve this issue.

Thanks!

Balasaheb

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Balasaheb