c# access database error 'Failed to enable constraints. $10

System.Data.ConstraintException: 'Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.'

i cannot change the access database

adapter1.Fill(dataTable1)
"Column 'FacturaNumber' is constrained to be unique. Value '' is already present."

FacturaNumber field is empty

was working all the time and then give this error.

i have another database everything the same and does not give me that error