Error email not exact - Zoho CRM says "Zoho CRM says 'duplicate data'. Check the input for Email and try again."

Error email not exact - Zoho CRM says "Zoho CRM says 'duplicate data'. Check the input for Email and try again."

Looking for a solution to an Error here. 
Our current flow is set up with a webhook when a lead is created by a lead capture form on our website. 

Our flow has a decision to update the existing lead if an existing matching email is present. 

One of the issues we seem to have is when a customer returns to the website and inputs their email with different capitalization compared to the original lead it will Fail to update the Lead. 

Example: 
existing lead email: warwick@zylker.com
new entry email: Warwick@zylker.com

The flow seems to find the different capitalised lead with no issue but then fails to update existing at end of the flow to update. 
Error = Zoho CRM says "Zoho CRM says 'duplicate data'. Check the input for Email and try again."






I have tried changing the Create or Update module entry to be the ${lead.Email} from Fetch lead however the input for Create module entry still grabs the original Email from Webhook.  

Hopefully someone knows a way to fix this. 
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