This record has been changed by another user ...

I received this message after adding a "bit" value to a table.

The error message box reads:

This record has been changed by another user since you started editing
it.
If you save the record, you will overwrite the changes the other user
made.
Copy the changes to the clipboard will let you look at the values the
other
user entered, and then paste your changes back in if you decide to
make
changes.


The "Save Record" button is not available.

Background: I have an Access front end with a SQL backend
I added a bit value that allowed nulls with no default value to the
backend database.
The front end continues to work fine until I update the external table
link. then I get this message when editing values in a form.

This is what worked for me.
I changed the new column to NOT allow nulls

had to update the value in all the existing records in this newly
added column, in order to make this change.
UPDATE TestTable
SET NewBitColumn=0

then set the default value to ((0))

This new column was represented as a checkbox in the Access form.