Unable to run Get Lead function in Salesforce

We have Added Salesforce Activities, added salesforce connector. but We are not able to execute get lead function facing below error.

PFA Screenshot

Error :

Get Lead: Not found - The requested resource is not found.
Provider Error Message: Not found - The requested resource is not found.
RequestId: 6613df48e4b0d6f8983d7660
ProviderMessage: requestId - 6613df49e4b0e9a40e259764, providerErrorCode - 404, message - Not Found, providerMessage - [{“errorCode”:“NOT_FOUND”,“message”:“Provided external ID field does not exist or is not accessible: Sam Hegde”}]

Could you please reply back ASAP

Could you assign the LeadId variable using assign activity instead of declaring its value in variable panel. See if that works, Also could you try passing the Lead id from salesforce instead of a name and see if that helps.