Hi @SKundu6
What I understand from your code is that you are storing the contact source in the contact property, and while creating the deal, you are sending that source contact property to the deal property “contact_source”.
Could you please verify at which point you are facing the problem? Is it in getting the source value in the contact property, or in creating the deal with that property as one of the options?
If there is another approach, please explain it so that we can provide a prompt solution.
I hope this will help you out. Please mark it as Solution Accepted and upvote to help another Community member.
Thanks!