HI @Manojcargo
Thanks for reaching out.
Based upon the error message,I am assuming that you are trying to set the name property of an object of type "microsoft.graph.recipient".
Based upon the documentation here https://learn.microsoft.com/en-us/graph/api/resources/recipient?view=graph-rest-1.0.
This type contains only one property called emailAddress of type EmailAddress, which in turn contains a name property.
Refer to the document here.
https://learn.microsoft.com/en-us/graph/api/resources/emailaddress?view=graph-rest-1.0
Hope this helps!
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".