I've read solutions to this error and know about formatting dates. In my case I'm not loading any dates into my Dynamics 365 Contact table. There are no 'required' date fields, that I see in the table, column list. Why would I get this error?
Flirstname
Lastname
customfield Yes/No
customfield2 yes/No
externalkey int
somehow the contact table is rejecting a date..... what column do I need to provide to supress this error? What is the differenct between a Managed Column and Standard column?