You've entered two different values for "{field}" in rows {first_row} and {second_row}, but they should be the same. Please make sure that they match and try again.

Why did this happen?

This error occurs when the value of two cells that belong to the same ad object do not match.

How do I fix it?

When you enter two rows that represent the same ad object, make sure that they match and have identical data.

* Nguồn: Facebook