How do you update a field (custom -- nullable date in this case) via REST

I can’t get the Swagger UI to update the field, I’ve tried ‘’, null, “null”, etc but have had no luck… passing null doesn’t give an error, but it doesn’t update either

What about “”?

Trying with an empty string… “”…. just gives this response:“The request is invalid.”

Putting in a valid date, for example “2020-01-15” works fine and does update.

May be a field that requires a value? What date field is it? UD Date field?

The field is a custom _UD field and is nullable:

image001.png

Did you ever figure this one out?

Not REST, but a few days ago I had to use this in a Customization:

edvRow[“MyUDDateField_c”] = DBNull.Value;

Server side code may be different, but at least worth a shot.