> 'ID is a required field'

This error occurs when you try to post a row (a record) where the field with
the name 'ID' is empty. In the database table's data definition, ID is
probably declared as 'NOT NULL' and maybe as a primary key. So all rows need
to contain an ID.

If two applications behave differently, this is probably because they work
with different tables: one of them has the ID as a NOT NULL field, and the
other one as an optional field.

Cheers,
Tobias