Salesforce integration and error message



I tried to integrate Unbounce with Salesforce and I keep on receiving this error message :

Request Error: Salesforce received No or request may be missing a required field which should be sent as a boolean field. Please update your field mapping configuration.

Does someone know how to fix it ?

Also I red online that we should have a field “Company” so I mapped one but I never created it on the form, I only created a field on the mapping. Is this supposed to be the correct way to do it?