Portal Problem when creating new records to a related table
I have 2 tables that are related. I have a layout (from table1) that uses a portal to create new records in the other table (table2). It works except for when I go to enter a new record using the portal I get an error message that reads "The field cannot be modified until "name_of_field" is given a valid value." Each time I try to enter data into each of the fields in the portal, I get the same error message but with a different field name in the error message. If I go through and attempt to enter data into each field in the portal (dismissing the error message each time), after I've attempted entering data in each field, all the data I attempted to enter finally shows up in the portal row. At this point the new record added via the portal appear in the other table1 as expected.
Why am I getting those error messages, and how do I get rid of them so I can enter data into the portal normally?
How do I set it up so each row in the portal can create a new record in table2? Right now, trying to add data to any additional rows in the portal causes the fields in that row to fill themselves automatically with the data that was entered in the first row of fields.